FAHLÉN, Per; VOLL, Hendrik; NAUMOV, Jüri. Efficiency of pump operation in hydronic heating and cooling systems. Journal of Civil Engineering and Management, [S. l.], v. 12, n. 1, p. 57–62, 2006. DOI: 10.3846/13923730.2006.9636373. Disponível em: https://journals.vilniustech.lt/index.php/JCEM/article/view/8781. Acesso em: 6 jul. 2025.