Askarova, A., Safarik, P., Bolegenova, S., Mazhrenova, N., Bolegenova, S. and Nugymanova, A. (2020) “Calculation of standards for permissible environmental impact for boilers with known technical characteristics”, Recent Contributions to Physics, 2020(1), pp. 90–95. doi: 10.26577/RCPh.2020.v72.i1.11.