Dieky Adzkiya, et al. “Perbandingan Algoritma Golub Kahan Dan QR Simetri Untuk Dekomposisi Nilai Singular”. Limits: Journal of Mathematics and Its Applications, vol. 3, no. 1, May 2006, p. 19, https://journal.its.ac.id/index.php/limits/article/view/5336.