2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34497A simple method is presented which enables us to construct scalar field solutions from any given Einstein-Maxwell solution in colliding plane waves. As an application we give scalar field extensions of the solution found by Hogan, Barrabes and Bressange.Letter/5 pagesGeneral Relativity and Quantum Cosmologytext