Yau Kar Hing, W.M. Chin, and M.R. Heikal, “Numerical and Experimental Determination of Wavy Fin-Tube Shape Factor”, J. Mech. Eng. Sci., vol. 6, no. 1, pp. 889–900, Jun. 2014, doi: 10.15282/jmes.6.2014.15.0085.