Sammer Yousuf <br/><br/>
Isolation,Structure Elucidation And Biotransformation Studies On Secondary Metabolites From Withania Somnifera And Related Plants  Ph.D. Thesis 

 - Karachi:  H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi  2006 
 -  Thesis, available in print and electronic formats, supervised by  Prof. Dr. Muhammad Iqbal Choudhary