The Use Of Solar Energy In Heating Systems. Journal of Pharmaceutical Negative Results, [S. l.], p. 1028–1034, 2022. DOI: 10.47750/pnr.2022.13.S08.129. Disponível em: https://pnrjournal.com/index.php/home/article/view/2901.. Acesso em: 30 jun. 2026.