Brunetkin, O., Maksymov, M., Maksymova, O. and Zosymchuk, A. 2017. Development of the method of approximate solution to the nonstationary problem on heat transfer through a flat wall. Eastern-European Journal of Enterprise Technologies. 6, 5 (90) (Dec. 2017), 31–40. DOI:https://doi.org/10.15587/1729-4061.2017.118930.