VELYKOCHYY, VOLODYMYR; DEREVJANKO, SERHIY; VYCHIVSKYI, PAVLO. TO THE 80TH ANNIVERSARY OF PROFESSOR KALAKURA YA.S. AND THE 55TH ANNIVERSARY OF HIS SCIENTIFIC AND PEDAGOGICAL ACTIVITY. Journal of Vasyl Stefanyk Precarpathian National University, [S. l.], v. 6, n. 2, p. 133–137, 2019. DOI: 10.15330/jpnu.6.2.133-137. Disponível em: https://scijournals.pnu.edu.ua/index.php/jpnu/article/view/1885. Acesso em: 2 may. 2024.