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diff --git a/tests/data/release/ixktsx5gmnbonl5zxubhxhfgya b/tests/data/release/ixktsx5gmnbonl5zxubhxhfgya
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@@ -0,0 +1,73 @@
+{
+  "abstracts": [],
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+      "raw_name": "Naphtal Habiyaremye",
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+      "raw_name": "Justus Ochieng",
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+      "raw_name": "Thomas Heckelei",
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+      "surname": "Heckelei"
+    },
+    {
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+      "raw_name": "Justus Ochieng",
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+      "surname": "Ochieng"
+    },
+    {
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+      "raw_name": "Thomas Heckelei",
+      "role": "author",
+      "surname": "Heckelei"
+    }
+  ],
+  "ext_ids": {
+    "doi": "10.22004/ag.econ.295750"
+  },
+  "extra": {
+    "datacite": {
+      "resourceType": "Text",
+      "resourceTypeGeneral": "Text",
+      "subjects": [
+        {
+          "subject": "Crop Production/Industries"
+        },
+        {
+          "subject": "Productivity Analysis"
+        }
+      ]
+    }
+  },
+  "ident": "ixktsx5gmnbonl5zxubhxhfgya",
+  "language": "en",
+  "refs": [],
+  "release_type": "article-journal",
+  "release_year": 2019,
+  "revision": "67058a24-574e-4a42-b048-56292f0afd8d",
+  "state": "active",
+  "title": "Economic analysis of integrated vegetable-poultry production systems in the Babati District of Tanzania",
+  "work_id": "lurv5vhvtvdwze2o4gc5b6hsxq"
+}
diff --git a/tests/data/release/q5yheygzs5fxnahqihwejepn6u b/tests/data/release/q5yheygzs5fxnahqihwejepn6u
new file mode 100644
index 0000000..ba5393a
--- /dev/null
+++ b/tests/data/release/q5yheygzs5fxnahqihwejepn6u
@@ -0,0 +1,712 @@
+{
+  "abstracts": [
+    {
+      "content": "<jats:title>Abstract</jats:title><jats:sec>\n                <jats:title>Background</jats:title>\n                <jats:p>Integrated vegetable–poultry production system has recently attracted attention both from the scientific and policy making communities for its potential contribution to food security as well as the opportunities it offers in improving the livelihoods of smallholder farmers in Tanzania. Despite the efforts made, its benefits and costs in heterogeneous and real-world settings are not fully understood. Despite the promising design of the vegetable–poultry production system, rather little is known of its profitability and its contribution to better living conditions of rural households in different real-world settings. The same applies regarding the knowledge on factors influencing the decision to adopt such an integrated system.</jats:p>\n              </jats:sec><jats:sec>\n                <jats:title>Methods</jats:title>\n                <jats:p>Using cross-sectional data collected from 250 households in Babati district of Tanzania, we employ a gross margin analysis and a logit model to evaluate the profitability and to investigate the factors influencing the decision to integrate vegetable and poultry production systems.</jats:p>\n              </jats:sec><jats:sec>\n                <jats:title>Results</jats:title>\n                <jats:p>We find that the integrated vegetable–poultry production system is more profitable than vegetable farming alone and the profitability increases as the poultry flock size increases. An integrating household should keep 18 birds to get significant higher profit than non-integrator. Furthermore, gender and education level of the household head, awareness of integration benefits, land owned, household size, off-farm income, and total income received by the household influence the decision to integrate vegetable and poultry.</jats:p>\n              </jats:sec><jats:sec>\n                <jats:title>Conclusion</jats:title>\n                <jats:p>The study strongly promotes the integration of vegetable–poultry production system and highlights the influence of gender and awareness of integration benefits on the decision to integrate vegetable and poultry. Hence, the policy implication is to empower women and provide capacity building through training and extension services such as provision of affordable and improved vegetable seeds and poultry breeds.</jats:p>\n              </jats:sec>",
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+        ],
+        "unstructured": "Mutayoba S, Katule A, Minga U, Mtambo M, Olsen JE. The effect of supplementation on the performance of free range local chickens in Tanzania. Livestock Res Rural Dev. 2012;24(5):93.",
+        "volume": "24"
+      },
+      "index": 34,
+      "key": "272_CR35",
+      "locator": "93",
+      "year": 2012
+    },
+    {
+      "extra": {
+        "unstructured": "Mwaniki A. Achieving food security in Africa: challenges and issues. UN Office of the Special Advisor on Africa (OSAA); 2006. http://www.un.org/africa/osaa/reports/Achieving%20Food%20Security%20in%20Africa-Challenges%20and%20Issues.pdf. Accessed 9 May 2010."
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+      },
+      "index": 36,
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+      "locator": "927",
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+    },
+    {
+      "extra": {
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+      "key": "272_CR38"
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+    {
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+        "doi": "10.1017/s1742170516000508",
+        "unstructured": "Ochieng J, Afari-Sefa V, Karanja D, Kessy R, Rajendran S, Samali S. How promoting consumption of traditional African vegetables affects household nutrition security in Tanzania. Renew Agric Food Syst. 2017;33:105.",
+        "volume": "33"
+      },
+      "index": 38,
+      "key": "272_CR39",
+      "locator": "105",
+      "year": 2017
+    },
+    {
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+      "extra": {
+        "authors": [
+          "J Ochieng"
+        ],
+        "unstructured": "Ochieng J, Owuor G, Bebe BO. Determinants of adoption of management interventions in indigenous chicken production in Kenya. Afr J Agric Resour Econ. 2012;7(1):39–50."
+      },
+      "index": 39,
+      "key": "272_CR40",
+      "locator": "39",
+      "year": 2012
+    },
+    {
+      "extra": {
+        "unstructured": "POGRBC. Your guide to world of chickens: using your chickens' manure as vegetable garden fertilizer; 1999. http://poultryone.com/gardens-and-misc/chickenmanure-html. Accessed 6 June 2017."
+      },
+      "index": 40,
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+    },
+    {
+      "extra": {
+        "unstructured": "Sonaiya E. The context and prospects for development of smallholder rural poultry production in Africa. In: Paper presented at the CTA-Seminar proceedings on smallholder rural poultry production; 1990."
+      },
+      "index": 41,
+      "key": "272_CR42"
+    },
+    {
+      "extra": {
+        "unstructured": "TALIRI. The role of chicken in the tanzanian economy and opportunities for development: an overview. First ACGG Tanzania Innovation Platform Meeting; 2015. https://www.slideshare.net/ILRI/acgg-tanzania-2015. Accessed 6 June 2017."
+      },
+      "index": 42,
+      "key": "272_CR43"
+    },
+    {
+      "extra": {
+        "unstructured": "TDHS-MIS. Tanzania Demographic and Health Survey and Malaria Indicator Survey (TDHS-MIS) 2015–16; 2016. https://www.dhsprogram.com/pubs/pdf/SR233/SR233.pdf. Accessed 13 June 2017"
+      },
+      "index": 43,
+      "key": "272_CR44"
+    },
+    {
+      "extra": {
+        "unstructured": "Thorne P. Crop-livestock interactions. a review of opportunities for developing integrated models. Consultant's Report, Systems Analysis and Impact Assessment Project. Nairobi, Kenya: International Livestock Research Institute; 1998."
+      },
+      "index": 44,
+      "key": "272_CR45"
+    },
+    {
+      "extra": {
+        "unstructured": "TNNS. Tanzania National Nutrition Survey 2014; 2014. https://www.unicef.org/esaro/Tanzania_National_Nutrition_Survey_2014_Final_Report_18012015.pdf. Accessed 13 June 2017."
+      },
+      "index": 45,
+      "key": "272_CR46"
+    },
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+        "doi": "10.1016/j.jfca.2010.05.002",
+        "unstructured": "Uusiku NP, Oelofse A, Duodu KG, Bester MJ, Faber M. Nutritional value of leafy vegetables of sub-Saharan Africa and their potential contribution to human health: a review. J Food Compos Anal. 2010;23(6):499–509.",
+        "volume": "23"
+      },
+      "index": 46,
+      "key": "272_CR47",
+      "locator": "499",
+      "year": 2010
+    },
+    {
+      "extra": {
+        "unstructured": "Voh J, Ahmed B, Olufajo S, Dike M, Ishaku F (2001) Adoption of improved cowpea technologies in the savanna ecology of Nigeria. A report of survey conducted on PEDUNE/PRONAF project in Nigeria by Institute for Agricultural Research, Ahmadu Bello University Samaru. Zaria, Nigeria."
+      },
+      "index": 47,
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+      "container_name": "2016 Global hunger index: getting to zero hunger",
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+        "unstructured": "Von Grebmer K, Bernstein J, Nabarro D, Prasai N, Amin S, Yohannes Y, et al. 2016 Global hunger index: getting to zero hunger. Washington: Intl Food Policy Res Inst; 2016.",
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+        "unstructured": "Weinberger K. Indigenous vegetables in Tanzania: significance and prospects, vol. 600. Tainan: AVRDC-WorldVegetableCenter; 2004.",
+        "volume-title": "Indigenous vegetables in Tanzania: significance and prospects,"
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+        "unstructured": "Weinberger K, Lumpkin TA. Diversification into horticulture and poverty reduction: a research agenda. World Dev. 2007;35(8):1464–80.",
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+        "unstructured": "Weinberger K, Lumpkin A. Horticulture for poverty alleviation: the unfunded revolution. The World Vegetable Centre. AVRDC Publication (05-613); 2005."
+      },
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+    },
+    {
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+        ],
+        "doi": "10.1016/s0020-7519(99)00086-7",
+        "unstructured": "Williams RB. A compartmentalised model for the estimation of the cost of coccidiosis to the world's chicken production industry. Int J Parasitol. 1999;29(8):1209–29.",
+        "volume": "29"
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+      "key": "272_CR53",
+      "locator": "1209",
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+  "release_date": "2021-01-12",
+  "release_stage": "published",
+  "release_type": "article-journal",
+  "release_year": 2021,
+  "revision": "f0df6ff2-c001-4f26-aa8a-b0d34d70f35c",
+  "state": "active",
+  "title": "Economic analysis of integrated vegetable–poultry production systems in the Babati District of Tanzania",
+  "volume": "10",
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+}
diff --git a/tests/data/verify.csv b/tests/data/verify.csv
index 94b489c..2480a9e 100644
--- a/tests/data/verify.csv
+++ b/tests/data/verify.csv
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