Revelation of ?-sitosterol from Benincasa hispida Seeds, Carissa congesta Roots and Polyalthia longifolia Leaves by High Performance Liquid Chromatography, Doshi, Gaurav Mahesh, Chaskar Pratip Kashinath, and Une Hemant Devidas , Pharmacognosy Journal, September 2016, Volume 8, Issue 6, p.610-613, (2016)