IVÁNYI , A. ELECTRICAL FIELD IN CYLINDRICAL SYMMETRICAL LAYOUTS BY VARIATIONAL CALCULUS Periodica Polytechnica Electrical Engineering, [S. l.], v. 26, n. 3-4, p. 221–230, 1982. Disponível em: https://pp.bme.hu/ee/article/view/4758. Acesso em: 27 dec. 2024.