P. Vignesh, R. Ashok Kumar, M.Karthikeyan, R.Kavinkumar, K.Lathapriyan, and P.Manojkumar. “Experimental Design and Fabrication of a Portable Hydraulic Pipe Bending Machine”. International Journal of Intellectual Advancements and Research in Engineering Computations, vol. 6, no. 1, Mar. 2018, pp. 751-5, doi:10.61096/ijiarec.v6.iss1.2018.751-755.