ORLOV, A. A. Pedagogical romantic and talented scientist-teacher (on the 100th anniversary of E.G.Kostyashkin’s birth). Pedagogika, [S. l.], v. 89, n. 7, p. 104–117, 2025. Disponível em: https://ojs.owebs.ru/pedagogika/article/view/30449. Acesso em: 8 nov. 2026.