Ul Hassan, Qazi Mahmood, and Syed Tauseef Mohyud-Din. “EXP-FUNCTION METHOD USING MODIFIED RIEMANN– LIOUVILLE DERIVATIVE FOR SINGULARLY PERTURBED BOUSSINESQ EQUATIONS OF FRACTIONAL-ORDER”. Italian Journal of Pure and Applied Mathematics, vol. 32, Aug. 2014, pp. 185-92, https://journals.uniurb.it/index.php/ijpam/article/view/6223.