Gema M. Diaz-Toca Nadia Ben Atti Block LU factorization of Hankel and Bezout matrices and Euclidean algorithm. 135-149 2009 86 Int. J. Comput. Math. 1 http://dx.doi.org/10.1080/00207160802322340 db/journals/ijcm/ijcm86.html#Diaz-TocaA09