Reference health
Institutional Structure of the Agricultural Utilization of Sludge From Wastewater Treatment Plants in Bulgaria
7/7 checkable references clean · checked 2026-08-02
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.
54 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 7 checked references that resolve
resolves10.15587/2706-5448.2021.240343
A study on wastewater treatment sludge utilization in Bulgarian agriculture
resolves10.17221/36/2018-SWR
Present restrictions of sewage sludge application in agriculture within the European Union
resolves10.4236/ajps.2012.312209
Sewage Sludge: An Important Biological Resource for Sustainable Agriculture and Its Environmental Implications
resolves10.57017/jaes.v17.1(75).01
About the Governance Efficiency of Agricultural Farms. The Case of Bulgaria
resolves10.47752/sjef.44.117.135
Identifying and Evaluating the Mechanisms and Modes of Governance of Ecosystem Services – The Case of Bulgarian Agriculture
The 54 references without a DOI — listed, not checked
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no DOI — not checked??????? ?? ??????????????? ?? ?????? ?? ????????????? ?? ????????? ???? ? ???????? ?????????? ?? ????????
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no DOI — not checked????????-????????????, ?????????? ? ????????????? ??????? ??? ????????????????? ?? ?????? ? ???????????, ???????? ??? ??????????? ?? ????????? ????
no DOI — not checkedref10
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no DOI — not checkedAgrarian Governance -Who
no DOI — not checkedWhat is Agrarian Governance?
no DOI — not checkedref16
no DOI — not checkedIdentification of Factors for Agricultural Use of Sludge from Wastewater Treatment in Bulgaria
no DOI — not checkedEfficiency and Factors for Agricultural Use of Sludge in Circular Bulgarian Economy
no DOI — not checkedAGRICULTURAL SLUDGE UTILIZATION IN BULGARIAN CIRCULAR ECONOMY
no DOI — not checkedTransforming Sludge from a Waste into Product in Circular Economy of Bulgarian Agriculture
no DOI — not checkedFactors for inclusion of wastewater treatment sludge in agri-food chain in Bulgaria
no DOI — not checkedConvergent analysis of waste water practices among EU countries
no DOI — not checkedref24
no DOI — not checkedResources and Risks: Perceptions on the Application of Sewage Sludge on Agricultural Land in Sweden, a Case Study
no DOI — not checkedref27
no DOI — not checkedOptimal Solutions for the Use of Sewage Sludge on Agricultural Lands
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no DOI — not checkedSustainability of Bulgarian farming enterprises during European Union common agricultural policy implementation
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no DOI — not checkedImplications of Fukushima Nuclear Disaster for Japanese Agri-food Chains
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no DOI — not checkedThe competitiveness of agricultural holdings in
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no DOI — not checkedEconomics of agrarian institutions
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no DOI — not checked?????? ?? ????????? ? ????????? ?? ??????????????? ??????????? ?? ???????????? ??????????
no DOI — not checked???????????????????? ?? ???????????? ?????????? ? ???????? ? ?????? ?? ??????? ??????????
no DOI — not checkedref61
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