Askarova, A., Safarik, P., Bolegenova, S., Mazhrenova, N., Bolegenova, S., & Nugymanova, A. (2020). Calculation of standards for permissible environmental impact for boilers with known technical characteristics. Recent Contributions To Physics (Rec.Contr.Phys.), 72(1), 90-95. doi:10.26577/RCPh.2020.v72.i1.11