Іванов, С., Л. Масленнікова, and З. Грушак. “IR-Spectroscopis Investigation of Foam Hermetic on the Basis of Macroisocyanate”. Proceedings of National Aviation University (archive), vol. 23, no. 1, Jan. 2005, pp. 188-91, doi:10.18372/2306-1472.23.1130.