"ALDH 1 Family". Dr. Vasilis Vasiliou's laboratory at the University of Colorado's Health Sciences Center. Archived from the original on 13 January 2013. Retrieved 22 October 2012.
van Pelt AM, de Rooij DG (February 1991). "Retinoic acid is able to reinitiate spermatogenesis in vitamin A-deficient rats and high replicate doses support the full development of spermatogenic cells". Endocrinology. 128 (2): 697–704. doi:10.1210/endo-128-2-697. PMID1989855.
van Pelt AM, de Rooij DG (February 1991). "Retinoic acid is able to reinitiate spermatogenesis in vitamin A-deficient rats and high replicate doses support the full development of spermatogenic cells". Endocrinology. 128 (2): 697–704. doi:10.1210/endo-128-2-697. PMID1989855.
"ALDH 1 Family". Dr. Vasilis Vasiliou's laboratory at the University of Colorado's Health Sciences Center. Archived from the original on 13 January 2013. Retrieved 22 October 2012.