Sosvorova, L.K., Sarek, J., Vitku, J., Kvasnica, M. Synthesis of 3 alpha-deuterated 7 alpha-hydroxy-DHEA and 7-oxo-DHEA and application in LC-MS/MS plasma analysis. Steroids. 2016, 112(AUG), 88-94. ISSN 0039-128X. E-ISSN 1878-5867. Available: https://doi.org/10.1016/j.steroids.2016.05.001