Rajesh, and Ranadip Mandal. “Cost Estimation for Widening of the Existing 4-Lane Divided Carriageway to 6-Lane Divided Carriageway for 15 Km Length of Gurgaon Jaipur Section of NH-8”. International Journal for Research Publication and Seminar, vol. 7, no. 2, June 2016, https://jrps.shodhsagar.com/index.php/j/article/view/774.