POOMSAWAT, S. A study of the efficiency of a solar water heater. Srinakharinwirot University Engineering Journal, Bangkok, Thailand, v. 14, n. 1, p. 67–77, 2019. Disponível em: https://ph02.tci-thaijo.org/index.php/sej/article/view/135672. Acesso em: 26 may. 2024.