150th Anniversary
1869÷2019

Journal
of the Bulgarian Academy of Sciences

Academic journal of the Bulgarian Academy of Sciences

ISSN 2683-0302 (on line)
ISSN 0007-3989 (print)

Advisory Board

Prof. Andrzej Dworak (Poland)

Acad. Bogdan Petrunov

Acad. Georgi Markov

Corr. Memb. Dimitar Ivanov

Prof. Ivan Nedkov, DSc

Acad. Ivan Zagorchev

Corr. Memb. Ilza Pajeva

Prof. Lyubomir Mikov, DSc

Prof. Michail Stanchev (Ukraine)

Prof. Natalia Tarasova (Russia)

Prof. Nikolay Vitanov, DSc

Prof. Rossitsa Chobanova, DSc

Prof. Svetla Koeva, PhD

Prof. Hilmar Walter (Germany)

Acad. Christo Tsvetanov

Acad. Chavdar Rumenin

Acad. Yachko Ivanov (Editor-in-Chief)