SÁLYI, B. UNTERSUCHUNG DES GESCHLOSSENEN RAHMENWERKS IN DER EBENE Periodica Polytechnica Mechanical Engineering, [S. l.], v. 7, n. 2, p. 163–173, 1963. Disponível em: https://pp.bme.hu/me/article/view/6315. Acesso em: 18 may. 2024.