Kahantsova Tetyana . Professional development of the heads of physical and mathematical circlesof extracurricular education institutions in the system of postgraduate education : Доктор філософії : spec.. 011 - Освітні, педагогічні науки : presented. 2021-02-25; popup.evolution: .; Oleksandr Dovzhenko Hlukhiv national pedagogical university. – Глухів, 0821U100378.

Updated: 2026-10-22