KOZACZKA, Eugeniusz; STEPNOWSKI, Andrzej. Professor Leif Bjørnø. Archives of Acoustics, [S. l.], v. 40, n. 4, p. 449–451, 2015. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/1659. Acesso em: 26 apr. 2025.