Ken Habgood; Itamar Arel (2012). «A condensation-based application of Cramerʼs rule for solving large-scale linear systems». Journal of Discrete Algorithms (10): 98–109. doi:10.1016/j.jda.2011.06.007.
Οι αποδείξεις δίνονται στο J.R. Silvester, Determinants of Block Matrices, Math. Gazette, 84 (2000), σ. 460–467, διαθέσιμες στην http://www.jstor.org/stable/3620776