O'Connor J J and Robertson E F. Matrices and determinants. School of Mathematical and Computational Sciences, University of St Andrews. [2013-10-14]. (原始内容存档于2015-03-08).
O'Connor J J and Robertson E F. Matrices and determinants. School of Mathematical and Computational Sciences, University of St Andrews. [2013-10-14]. (原始内容存档于2015-03-08).