http://qiserver.ugr.es/cod/1510519.cif
http://qiserver.ugr.es/cod/1510520.cif
http://qiserver.ugr.es/cod/1510573.cif
http://qiserver.ugr.es/cod/1514105.cif
http://qiserver.ugr.es/cod/1522568.cif
http://qiserver.ugr.es/cod/1538842.cif
http://qiserver.ugr.es/cod/1539089.cif
http://qiserver.ugr.es/cod/1541639.cif