Romanenkova, J. .; Bratus, . I. B.; Myikhalchuk, V. .; Gunka, A. . LVOV EX-LIBRIS SCHOOL AS THE TRADITIONS KEEPER OF THE INTAGLIO PRINTING TECHNIQUES IN THE UKRAINIAN GRAPHIC ARTS AT THE TURN OF THE XXTH AND XXITH CENTURIES. Rev. incl. 2021, Ph. D. Anna Gunka.