IVÁNYI, A. LOW FREQUENCY FIELD OF AN EARTHING CONDUCTOR BY VARIATIONAL METHOD Periodica Polytechnica Electrical Engineering, [S. l.], v. 33, n. 1-2, p. 39–48, 1989. Disponível em: https://pp.bme.hu/ee/article/view/4582. Acesso em: 9 apr. 2025.