Open Source Web Software Architecture Components for Geographic Information Systems in the Last 5 Years: A Systematic Mapping Study. - Alvaro Uyaguari; Edison Espinosa-Gallardo; Santiago P. Jácome-Guerrero; Patricio Espinel; Cristian F. Cabezas; Gloria I. Arias Almeida; Frankz Alberto Carrera Calderón (ICITS, 2018)