Behre, HM, Abshagen, K, Oettel, M, Hubler, D and Nieschlag, E. (1999). Intramuscular injection of testosterone undecanoate for the treatment of male hypogonadism: phase I studies. European Journal of Endocrinology 140: 414-419.
Behre, HM, Baus, S, Kliesch, S, Keck, C, Simoni, M and Nieschlag, E (1995). Potential of testosterone buciclate for male contraception: endocrinological differences between responders and nonresponders. Journal of Clinical Endocrinology and Metabolism 80: 2394-2403.