María-del-Mar Gallardo Jesús Martínez Pedro Merino Pablo Nuñez Ernesto Pimentel PiXL: Applying xml standards to support the integration of analysis tools for protocols. 57-69 2007 65 Sci. Comput. Program. 1 http://dx.doi.org/10.1016/j.scico.2006.08.006 db/journals/scp/scp65.html#GallardoMMNP07