BEZRODNY, M.K.; Oslovskyi S.А. Efficiency analysis of using a combination of air and ground heat pumps for heating and ventilation. Eurasian Physical Technical Journal, [S. l.], v. 18, n. 1(35), p. 57–64, 2021. DOI: 10.31489/2021No1/57-64. Disponível em: https://phtj.buketov.edu.kz/EPTJ/article/view/85. Acesso em: 3 mar. 2026.