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P. K. Bhuyan and M. S. Nayak,"A review on level of service analysis of urban streets", Transport Reviews, vol.33, no.2, pp.219-238, Taylor and Francis 2013, 10.1080/01441647.2013.779617       Article

S. S. Mohapatra, P. K. Bhuyan, and K.,"Genetic algorithm fuzzy clustering using GPS data for defining level of service criteria of Urban streets", European Transport\Trasporti Europei, vol.49, no.52, Italian Association for Traffic and Transport Engineering – Cultural association, December 2012       Article

P. K. Bhuyan and K.,"Defining LOS criteria of urban streets using GPS data: k-means and k-medoid clustering in Indian context", Transport, vol.27, no.2, pp.149-157, Taylor and Francis, June 2012, 10.3846/16484142.2012.692354       Article

P. K. Bhuyan and K. Krishnarao,"Defining level of service criteria of urban streets in Indian context", European Transport \ Trasporti Europei, vol.49, pp.38-52, May 2011       Article

P. K. Bhuyan and K.,"FCM clustering using GPS data for defining level of service criteria of urban streets in Indian context", Transport problems, vol.5, no.4, pp.105-113, December 2010       Article

S. K. Beura, C. Haritha, and P. K. Bhuyan,"Urban road segment level of service based on bicycle users’ perception under mixed traffic conditions", Journal of Modern Transportation, vol.25, no.2, pp.90-105, Springer International Publishing 2007, 10.1007/s40534-017-0127-9       Article