Tsapko, Y., R. Vasylyshyn, O. Melnyk, V. Lomaha, Tsapko А., and O. Bondarenko. “Regularities in the Washing Out of Water-Soluble Phosphorus-Ammonium Salts from the Fire-Protective Coatings of Timber through a Polyurethane Shell”. Eastern-European Journal of Enterprise Technologies, vol. 2, no. 10 (110), Apr. 2021, pp. 51-58, doi:10.15587/1729-4061.2021.229458.