1. [ICIMOD] International Centre for Integrated Mountain Development 2004. Participatory forest management implication for policy and human resources development in Hind Kush Himalayas. Kathmandu (Nepal): ICIMOD: 79.
2. [IUCN] International Union for Conservation of Nature 2008. Red List of threatened species; [cited 2009 Jul 13]. Available from: www.iucnredlist.org
3. An analysis of the Himalayan environment and guidelines for its management and ecologically sustainable development;Ahmad;Environmentalist,1990
4. The decline of conifer forest cover in Pakistan: a GIS approach;Ahmad;Pak. J. Bot.,2012
5. Taxol (paclitaxel): historical and ecological aspects;Appendin;Fitoterapia,1993