Dr. Krishan has been recently ranked amongst the top 2% scientists of the world in the field of Legal & Forensic Medicine based on a study conducted by Stanford University scientists.[9] He is the only anthropologist from India listed in the prestigious world's top 2% scientists.[10][11] He is positioned at 16th rank in Legal & Forensic Medicine category worldwide.[12][13][14] He is one of the most cited forensic scientists having 369 publications with more than 83,000 citations.[15]
His published research deals with the analysis of various aspects of human morphology and their forensic applications in Indian populations.[17][18][19][20] He has contributed articles to the Encyclopedia of Forensic Sciences 2nd Edition and Encyclopedia of Forensic and Legal Medicine 2nd Edition published by Elsevier in 2013 [21][22] and 2016 [23][24][25] respectively.
His most cited work pertains to the forensic podiatry of the north Indian population.[26][27] In one of his noteworthy work in 2008, he studied the effect of body weight and additional body weight on the footprints and its interpretation in crime scene investigation.[28]
He also established some of the unique and individualistic characteristics of the footprints which are helpful in identification of criminals.[29] He devised and calculated the effect of limb asymmetry on estimation of stature in forensic examinations.[30] He devised a novel index called Heel-Ball Index in the forensic literature emphasizing its relevance in sex determination.[31][32] He has published unique work on the footprint ridge density of Indian population and its significance in forensic identification.[33][34]
^Krishan, Kewal; Kanchan, Tanuj; Dimaggio, John A. (2015). "Emergence of forensic podiatry—A novel sub-discipline of forensic sciences". Forensic Science International. 255: 16–27. doi:10.1016/j.forsciint.2015.06.012. PMID26163192.
^Krishan, Kewal (2008). "Establishing correlation of footprints with body weight—Forensic aspects". Forensic Science International. 179 (1): 63–69. doi:10.1016/j.forsciint.2008.04.015. PMID18515026.
^Krishan, Kewal (2007). "Individualizing characteristics of footprints in Gujjars of North India—Forensic aspects". Forensic Science International. 169 (2–3): 137–144. doi:10.1016/j.forsciint.2006.08.006. PMID16965880.
^Krishan, Kewal; Kanchan, Tanuj; Dimaggio, John A. (2010). "A study of limb asymmetry and its effect on estimation of stature in forensic case work". Forensic Science International. 200 (1–3): 181.e1–181.e5. doi:10.1016/j.forsciint.2010.04.015. PMID20478673.
^Krishan, Kewal; Kanchan, Tanuj; Passi, Neelam; Dimaggio, John A. (2012). "Heel-Ball (HB) Index: Sexual Dimorphism of a New Index from Foot Dimensions". Journal of Forensic Sciences. 57 (1): 172–175. doi:10.1111/j.1556-4029.2011.01960.x. PMID22074354. S2CID26942137.
^Krishan, Kewal; Kanchan, Tanuj; Pathania, Annu; Sharma, Ruchika; Dimaggio, John A. (2015). "Variability of footprint ridge density and its use in estimation of sex in forensic examinations". Medicine, Science and the Law. 55 (4): 284–290. doi:10.1177/0025802414557880. PMID25413487. S2CID25105576.
^Kanchan, T.; Krishan, K.; Aparna, K.R.; Shyamsunder, S. (2012). "Footprint ridge density: A new attribute for sexual dimorphism". Homo. 63 (6): 468–480. doi:10.1016/j.jchb.2012.09.004. PMID23137779.