Al-Amry, M. S., and M. M. F. Al-Shaoosh. “The Generalized Riccati Equation Mapping for Solving (cmZKB) and (pZK) Equations”. University of Aden Journal of Natural and Applied Sciences, vol. 23, no. 1, Apr. 2019, pp. 201-10, doi:10.47372/uajnas.2019.n1.a17.