^ abGerhardt K, Ludwig-Köhn H, Henning HV, Remberg G, Zeeck A (February 1989). "Identification of oestrogen metabolites in human urine by capillary gas chromatography and mass spectrometry". Biomed. Environ. Mass Spectrom. 18 (2): 87–95. doi:10.1002/bms.1200180202. PMID2706375.
^ abGaikwad NW (May 2013). "Ultra performance liquid chromatography-tandem mass spectrometry method for profiling of steroid metabolome in human tissue". Anal. Chem. 85 (10): 4951–60. doi:10.1021/ac400016e. PMID23597399.
^ abcdZhu BT, Han GZ, Shim JY, Wen Y, Jiang XR (September 2006). "Quantitative structure-activity relationship of various endogenous estrogen metabolites for human estrogen receptor alpha and beta subtypes: Insights into the structural determinants favoring a differential subtype binding". Endocrinology. 147 (9): 4132–50. doi:10.1210/en.2006-0113. PMID16728493.