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Research Institutional or Departmental

Academic Research Repository at the Burgas Free University Burgas Free University - 26 February 2012 [Record Details]

Bulgarian Digital Mathematics Library at IMI-BAS Bulgarian Academy of Sciences - 5 September 2009 [Record Details]

Bulgarian OpenAIRE Repository Bulgarian Academy of Sciences - 25 March 2012 [Record Details]

Central Medical Library e-repository Medical University Sofia - 22 December 2023 [Record Details]

Electronic Repository - Central Medical Library - MU, Sofia Medical University, Sofia - 25 March 2012 [Record Details]

NBU - Scholar electronic repository New Bulgarian University - 17 May 2007 [Record Details]

Welcome to Medical University Varna Repository - Medical University Varna Repository Medcial University - Varna - 17 November 2015 [Record Details]

Research Cross-Institutional

ACCESS | Open Access Journals ACCESS - 13 May 2020 [Record Details]

Institute of Mathematics and Informatics at Bulgarian Academy of Sciences Institute of Mathematics and Informatics - 5 September 2009 [Record Details]

e-Theses

Centre de documentation - Institut de la Francophonie pour l'Administration et la Gestion Institut de la Francophonie pour l'Administration et la Gestion (IFAG) , Le Centre de Documentation de l'Institut de la Francophonie pour l'Administration et la Gestion (IFAG) - 20 October 2011 [Record Details]

Database/A&I Index

Хуманитарни Балкански изследвания Nauchen Hronograf LTD. - 9 December 2018 [Record Details]