Three Body Problem Applied to the Helium Atom System: The Independent Electron Approximation (IEA). - J. M. Ramírez-Velásquez; Jennifer A. Sanchez (ISUM, 2019)

Solution of Schrödinger Equation Not Implementing Conventional Separation of Variables: Using the Trial and Error Brute Force Permutation Method. - J. M. Ramírez-Velásquez; Ismael Villegas (ISUM, 2019)