KAKLAUSKAS, Liudvikas. Evaluation of open and distance learning appying possibilities for scoolchildren extracurricuium education. Lietuvos matematikos rinkinys, [S. l.], v. 40, n. spec., p. 191–196, 2000. DOI: 10.15388/LMR.2000.35096. Disponível em: https://test.zurnalai.vu.lt/LMR/article/view/35096. Acesso em: 27 oct. 2025.