KUCZMA, Mieczysław. In Memoriam – Professor Erwin Stein. Computer Assisted Methods in Engineering and Science, [S.l.], v. 26, n. 1, p. 61-62, aug. 2019. ISSN 2299-3649. Available at: <https://cames.ippt.pan.pl/index.php/cames/article/view/265>. Date accessed: 04 dec. 2020.