PERIODICA POLYTECHNICA. MECHANICAL ENGINEERING VOLUMES 1-18 (1957-1974) CONTENTS, SUBJECT INDEX, AUTHORS INDEX Periodica Polytechnica Mechanical Engineering, [S. l.], v. 19, n. 4, p. 257–294, 1975. Disponível em: https://pp.bme.hu/me/article/view/5978. Acesso em: 19 may. 2024.