2016. DIELECTRIC AND MECHANICAL PROPERTIES OF CROSS-LINKED POLYURETHANES WITH INTRODUCED IN SITU HETEROPOLYNUCLEAR COMPLEXES CA/CU AND SR/CU: UDC: 678.01:539.4.014:544.163.3. Bulletin of Taras Shevchenko National University of Kyiv. Chemistry. 52, 1 (Dec. 2016), 15–17.