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المؤلفون: Iliyan Valeriev Dimitrov, Nikolay Petrov Boyadjiev, Katerina Nikolova Georgieva, Penka Angelova Angelova, Teodora Ruseva Stakova, Ivica Dimov, Anelia Vesselinova Bivolarska, Slavi Delchev, Fanka Gerginska, Elena Daskalova, Milena Nenkova Draganova-Filipova, Dobrin Ivanov Popov
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::6a0bb1d23859d12bea4b384ab41a0799
https://doi.org/10.21203/rs.3.rs-1569022/v1