S, Rajkumar and Karthigeyan, S and Sud, R K (2010) Genetic diversity of Indian tea(Camellia sinensis(L.)Kuntze) germplasm detected using morphological characteristics. Journal Cell and Plant Science, 1 (1). pp. 13-22.

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

Dhyani, D and Karthigeyan, S and Ahuja, Paramvir Singh (2005) An efficient round cut method (RCM) for emasculation of rose flowers. Acta Horticulture, 690. pp. 125-130.

Sharma, Bobita and Singh , Bikram and Dhyani, D and Verma, P K and Karthigeyan, S (2012) Fatty acid composition of wild growing rose species. Journal of Medicinal Plants Research Vol., 6 (6). pp. 1046-1049.

Gulati, Ashu and R, Rajkumar and Karthigeyan, S and Sud , R K and Vijayan, D and Thomas, J and Rajkumar, R and Das, R C and Tamuly, P and Hazarika, M and Ahuja, Paramvir Singh (2009) Catechin and Catechin Fractions as Biochemical Markers to Study the Diversity of Indian Tea (Camellia sinensis (L.) O. KUNTZE) Germplasm. Chemistry and Biodiversity, 6 (7). pp. 1042-1052. ISSN 1612-1872

Kaul, Kiran and Karthigeyan, S and Dhyani, D and Kaur, N and Sharma, R K and Ahuja, Paramvir Singh (2009) Morphological and molecular analyses of Rosa damascena x R. bourboniana interspecific hybrids. Scientia Hoticulturae, 122 (2). pp. 258-263. ISSN 0304-4238