Manoharan, K., P. Dissanayake, C. Pathirana, D. Deegahawature, and R. Silva. “Labour-Related Causes Controlling the Efficiency of Road Construction Operations in Sri Lanka: Engineers’ Standpoint”. Advances in Technology, vol. 2, no. 4, Dec. 2022, pp. 417-32, doi:10.31357/ait.v2i4.6072.