ГОМБЕРГ , Б., А. СОГРИН, and Т. КАЗАНЦЕВА. “MAGNETIC SYSTEMS OF CONTACTLESS REGULATED SYNCHRONOUS GENERATORS WITH BASIC MAGNETOELECTRIC EXCITATION”. Bulletin of the South Ural State University Series "Power Engineering", vol. 20, no. 3, Sept. 2020, pp. 119-31, doi:10.14529/power200312.