PERIODICA POLYTECHNICA: ELECTRICAL ENGINEERING - Volume I - XVIII (1957 -1974) CONTENTS - SUBJECT INDEX - AUTHOR INDEX. Period. Polytech. Elec. Eng. [Internet]. 1975 Jan. 1 [cited 2024 May 19];19(4):1-37. Available from: https://pp.bme.hu/ee/article/view/4960