Šernas, Vytautas. “The Paradigm of Education of Idealistic Realism (Commemorating the 115th Anniversary of Professor S. Šalkauskis)”. Acta Paedagogica Vilnensia 9 (December 20, 2002): 235–247. Accessed November 13, 2025. https://www.zurnalai.vu.lt/acta-paedagogica-vilnensia/article/view/9558.