Chand, Madhusmita, Mamoni Paitandi, and Mahendra Kumar Gupta. “Qualitative Sign Stability of Linear Time Invariant Descriptor Systems”. Acta Polytechnica 63, no. 3 (July 4, 2023): 171–178. Accessed January 22, 2025. https://ojs.cvut.cz/ojs/index.php/ap/article/view/8497.