LANGER, László; FRIGYES, Andor. FAST METHODS OF FREQUENCY ANALYSIS APPLIED IN PROCESS IDENTIFICATION AND CONTROL Periodica Polytechnica Electrical Engineering, [S. l.], v. 20, n. 3, p. 297–311, 1976. Disponível em: https://pp.bme.hu/ee/article/view/4923. Acesso em: 17 may. 2024.