Editorial: in memoriam Luis J. Sanz (1971-2015)

Abstract This issue is dedicated to the memory of Luis J. Sanz and this editorial is made up of three parts: an account of his work with the journal, words from the editor (2001-2013), and a brief CV which he had written shortly before his passing. Resumen Este número se dedica a la memoria de Luis J. Sanz y este editorial consta de tres partes. Un recuento de su trabajo con la revista, el recuerdo de la editora 2001-2013, y un breve CV que él mismo escribió poco antes de su muerte.