CSÖRGITS, F. DIE KENNLINIEN DER UNTERSYNCHRONEN STROMRICHTERKASKADE. Periodica Polytechnica Electrical Engineering, [S. l.], v. 14, n. 4, p. 399–417, 1970. Disponível em: https://pp.bme.hu/ee/article/view/5124. Acesso em: 15 may. 2024.