Rajkumar, S and Ahuja, Paramvir Singh (2010) Developmental adaptation of leaves in Podophyllum hexandrum for effective pollination and dispersal. Current Science, 99 (11). pp. 1518-1519. ISSN 0011-3891

Lal, Brij and Chawla, Amit and Singh, K N and Rajkumar, S (2006) Ecology and ethnobotany and Herniaria incana lam. Forestry, 29 (2). pp. 187-189.

Lal, Brij and Singh, K N and Chawla, Amit and Rajkumar, S (2006) Herniaria incana Lam: Addition tp the flora of Himachal Pradesh. Economic and Taxonomic Botany, 30 (3). pp. 694-696.

Karthigeyan, S and Rajkumar, S and Sharma, R K and Gulati, Ashu and Sud, R K and Ahuja, Paramvir Singh (2008) High Level of Genetic Diversity Among the Selected Accessions of Tea (Camellia sinensis) from Abandoned Tea Gardens in Western Himalaya. Biochemical Genetics, 46 (11-12). pp. 810-819. ISSN 0006-2928

Chawla, Amit and Rajkumar, S and Singh, K N and Singh, R D and Lal, Brij and Thukral, A K (2008) Plant Species Diversity along an Altitudinal Gradient of Bhabha Valley in Western Himalaya. Journal of Mountain Science, 5 (2). pp. 157-177. ISSN 1672-6316

Rajkumar, S and Ahuja, Paramvir Singh (2010) Development adaptation of leaves in Podophyllum hexandrum for effective pollination and dispersal. Current Science, 99 (11). pp. 1518-1519.

Chawla, Amit and Parkash, Om and Sharma, Varun and Rajkumar, S and Lal, Brij and Chand, Gopi and Singh, R D and Thukral, A K (2012) Vascular plants, Kinnaur, Himachal Pradesh, India. Check list, 8 (3). pp. 321-348.