Bialobrzeski, O. V., and D. I. Rodkin. “ALTERNATIVE INDICATORS OF POWER OF ELECTRIC ENERGY IN A SINGLE-PHASE CIRCUIT WITH POLYHARMONIC CURRENT AND VOLTAGE”. Electrical Engineering & Electromechanics, no. 1, Feb. 2019, pp. 35-40, doi:10.20998/2074-272X.2019.1.06.