Oleksandr Hrytsenko. Theoretical and Methodological Foundations for Creating a Modular-Variable Textbook in Natural and Mathematical Sciences for Primary School in the Context of Education Reform : Доктор філософії : spec.. 011 - Освітні, педагогічні науки : presented. ; popup.evolution: o; Sumy State Pedagogical University named after A. S. Makarenko. – Суми, 0826U001848.

Updated: 2026-10-22