see http://www.artium.esArchived 2017-09-19 at the Wayback Machine and also Constellation Gaur : una trama vanguardist del arte vasco = Gaur konstelazioa abangoardiako area euskal artean (exh cat). Vitoria Gasteiz, Caja Vital, Obra social = Vital Kutza, Gizarte-Ekintza, D.L 2004
see http://www.artium.esArchived 2017-09-19 at the Wayback Machine and also Constellation Gaur : una trama vanguardist del arte vasco = Gaur konstelazioa abangoardiako area euskal artean (exh cat). Vitoria Gasteiz, Caja Vital, Obra social = Vital Kutza, Gizarte-Ekintza, D.L 2004