The New High Sensitive Variant of Nonlinear Ultrasound Spectroscopy for Nondestructive Testing. Advances in Military Technology, [S. l.], v. 4, n. 1, p. 15–22, 2022. Disponível em: https://www.aimt.cz/index.php/aimt/article/view/1653.. Acesso em: 9 may. 2024.