Yiqin Lin and Liang Bao and Yimin Wei, A Projection Method Based on Extended Krylov Subspaces for Solving Sylvester Equations. journal = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology. July 2011, vol. 55(7). 1064 - 1070 [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/15709.