Starek, Ladislav. “Inverse Problem in Vibration of Lumped Non Conservative Systems Generating Symmetric Coefficient Matrices”. Technische Mechanik - European Journal of Engineering Mechanics 12, no. 2 (October 22, 2019): 107–111. Accessed May 5, 2024. https://journals.ub.ovgu.de/index.php/techmech/article/view/1345.