Pirke, K., Schweiger, U., Broocks, A., Tuschl, R., & Laessle, R. (1990). Luteinizing hormone and follicle stimulating hormone secretion patterns in female athletes with and without menstrual disturbances. Clinical endocrinology, 33(3), S. 345-353.

Pirke, K.M., U. Schweiger, A. Broocks, R.J Tuschl, and R.G Laessle. "Luteinizing Hormone and Follicle Stimulating Hormone Secretion Patterns in Female Athletes With and Without Menstrual Disturbances." Clinical Endocrinology 33, no. 3 (1990): S. 345-353.

Pirke, K.M., et al. "Luteinizing Hormone and Follicle Stimulating Hormone Secretion Patterns in Female Athletes With and Without Menstrual Disturbances." Clinical Endocrinology 33.3 (1990): S. 345-353.