M. F. Botia Mendivelso, M. T. Súarez Valderrama, and O. A. Romero Villalobos, “Implementation of the Kanban Method to a crm Software based in the Open Source Platform Vtiger”, ing. Solidar, vol. 12, no. 20, pp. 9–22, Oct. 2016, doi: 10.16925/in.v19i20.1412.