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2025	Learning Outside the Classroom – Long-Term Data Analysis as a Basis for a Concept for Implementing a Biological Excursion in Bulgarian/European/ Schools in the Context of the SDGs Journal of Lifestyle and SDGs Review Pavlina Marinova, Nikolay Natchev
2025	Morphological variation between Hyla arborea and Hyla orientalis from Bulgaria Zoologischer Anzeiger Simeon Lukanov, Irena Atanasova, Emiliya Vacheva, Angel Dyugmedzhiev, Simeon Borissov, Borislav Naumov