Brownstein, K. J., Rottinghaus, G. E., Knight, M., Ito, Y., & Folk, W. (2014). Isolation of the Predominant Cycloartane Glycoside, Sutherlandioside B, from Sutherlandia frutescens R.Br. by Spiral Countercurrent Chromatography. J Liq Chromatogr Relat Technol.

Brownstein, Korey J., George E. Rottinghaus, Martha Knight, Yoichiro Ito, und William Folk. "Isolation of the Predominant Cycloartane Glycoside, Sutherlandioside B, From Sutherlandia Frutescens R.Br. By Spiral Countercurrent Chromatography." J Liq Chromatogr Relat Technol 2014.

Brownstein, Korey J., et al. "Isolation of the Predominant Cycloartane Glycoside, Sutherlandioside B, From Sutherlandia Frutescens R.Br. By Spiral Countercurrent Chromatography." J Liq Chromatogr Relat Technol 2014.