Frey, A. J., Wang, Q., Busch, C., Feldman, D., Bottalico, L., Mesaros, C. A., . . . Snyder, N. W. (2016). Validation of highly sensitive simultaneous targeted and untargeted analysis of keto-steroids by Girard P derivatization and stable isotope dilution-liquid chromatography-high resolution mass spectrometry. Steroids.

Frey, Alexander J., Qingqing Wang, Christine Busch, Daniel Feldman, Lisa Bottalico, Clementina A. Mesaros, Ian A. Blair, Anil Vachani, et Nathaniel W. Snyder. "Validation of Highly Sensitive Simultaneous Targeted and Untargeted Analysis of Keto-steroids By Girard P Derivatization and Stable Isotope Dilution-liquid Chromatography-high Resolution Mass Spectrometry." Steroids 2016.

Frey, Alexander J., et al. "Validation of Highly Sensitive Simultaneous Targeted and Untargeted Analysis of Keto-steroids By Girard P Derivatization and Stable Isotope Dilution-liquid Chromatography-high Resolution Mass Spectrometry." Steroids 2016.