WASET
    Ber-Lin Yu and  Ting-Zhu Huang,  Minimal Critical Sets of Inertias for Irreducible Zero-nonzero Patterns of Order 3.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    January 2010, vol. 37(1). 127 - 129
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/11586.