BIELSKUS, Juozas; JANUŠEVIČIUS, Karolis; MARTINAITIS, Vytautas. A comparison of the thermodynamic efficiency of vacuum tube and flat plate solar collector systems. Mokslas – Lietuvos ateitis / Science – Future of Lithuania, [S. l.], v. 5, n. 4, p. 404–409, 2013. DOI: 10.3846/mla.2013.64. Disponível em: https://journals.vilniustech.lt/index.php/MLA/article/view/3915. Acesso em: 9 may. 2025.