1. Hemwati Nandan Bahuguna Garhwal University, Garhwal, P.O. Box 63, Srinagar-246174, Uttarakhand, India
2. Chromatography and Mass Spectrometry Centre, CROM-MASS, CENIVAM, Industrial University of Santander, Carrera 27, Calle 9, Edificio 45, Bucaramanga-680002, Colombia
3. Chemistry Division, Forest Research Institute, P.O. New Forest, Dehradun-248006, Uttarakhand, India