Hustin, J., Collette, J., & Franchimont, P. (1987). Immunohistochemical Demonstration of Placental Alkaline-phosphatase in Various States of Testicular Development and in Germ-cell Tumors. International Journal of Andrology, 10(1), 29-35. https://doi.org/10.1111/j.1365-2605.1987.tb00162.x (Original work published 1987)