Варнене Рeгинa. Information and bibliographical supply of scientific and technical problems. Knygotyra, [S. l.], v. 24, n. 17-2, p. 40–55, 1991. DOI: 10.15388/Knygotyra.1991.30101. Disponível em: https://test.zurnalai.vu.lt/knygotyra/article/view/30101. Acesso em: 26 oct. 2025.