PALÁNCZ, Béla; POPPER, György. SYMBOLIC SOLUTION OF BOUNDARY VALUE PROBLEM VIA MATHEMATICA. Periodica Polytechnica Civil Engineering, [S. l.], v. 44, n. 1, p. 89–97, 2000. Disponível em: https://pp.bme.hu/ci/article/view/652. Acesso em: 19 may. 2024.