BISZTRAY BALKU, Sándor; KRAMM, György; SZALAI, J. DEVELOPMENT OF PISTON SEALS FOR DEEP OIL-WELL PROBES FOR HIGH PRESSURE AND TEMPERATURE MEDIUM Periodica Polytechnica Mechanical Engineering, [S. l.], v. 34, n. 3-4, p. 153–160, 1990. Disponível em: https://pp.bme.hu/me/article/view/5618. Acesso em: 16 may. 2024.