Super-Symmetry Quantum Factorization of Radial Schrodinger Equation for the Doubly An-Harmonic Oscillator Via Transformation to Bi-Confluent Heunas Differential Operators. (2016). Global Journal of Science Frontier Research, 16(F4), 49-55. https://journalofscience.org/index.php/GJSFR/article/view/102940