SUGIRI, M.; SUYITNO, B. M.; PANE, E. A.; HARYANTO, G.; ISMAIL, I. Improvement of thermal performance of an indirect flat plate solar collector in solar water heater applications. Eastern-European Journal of Enterprise Technologies, [S. l.], v. 2, n. 8 (140), p. 41–49, 2026. DOI: 10.15587/1729-4061.2026.358842. Disponível em: https://journals.uran.ua/eejet/article/view/358842. Acesso em: 9 may. 2026.