Pečkus, Kęstutis. “The Preconditions of Parallel Education in Lithuanian Schools in 1918-1940”. Acta Paedagogica Vilnensia 2 (December 28, 1993): 29–45. Accessed November 15, 2025. https://www.zurnalai.vu.lt/acta-paedagogica-vilnensia/article/view/9364.