PALLÓ, G. PHILIP LENARD ALIAS LÉNÁRD FÜLÖP. Periodica Polytechnica Electrical Engineering, [S. l.], v. 32, n. 2-4, p. 197–202, 1988. Disponível em: https://pp.bme.hu/ee/article/view/4623. Acesso em: 14 may. 2025.