Singh, B. and Saxena, A. K. and Chandan, B. K. and Bhardwaj, V. and Gupta, V. N. and Suri, O. P. and Handa, S. S. (2001) Hepatoprotective activity of indigtone-a bioactive fraction fromIndigofera tinctoria Linn. Phytotherapy Research, 15 (4). pp. 294-297. ISSN 0951-418X

Singh, B. and Saxena, A. K. and Chandan, B. K. and Gupta, D. K. and Bhutani, K. K. and Anand, K. K. (2001) Adaptogenic activity of a novel, withanolide-free aqueous fraction from the roots ofWithania somnifera Dun. Phytotherapy Research, 15 (4). pp. 311-318. ISSN 0951-418X

Suri, Om P. and Gupta, Bishan D. and Suri, Krishan A. and Sharma, Ashok K. and Satti, Naresh K. (2001) A New Glycoside, 3-o-Demethylcolchicine-3-o-α-d-Glucopyranoside, fromGloriosa SuperbaSeeds. Natural Product Letters, 15 (4). pp. 217-219. ISSN 1057-5634