http://qiserver.ugr.es/cod/1509572.cif
http://qiserver.ugr.es/cod/1527251.cif
http://qiserver.ugr.es/cod/1540137.cif
http://qiserver.ugr.es/cod/1540138.cif
http://qiserver.ugr.es/cod/1540139.cif
http://qiserver.ugr.es/cod/1540140.cif
http://qiserver.ugr.es/cod/1540141.cif
http://qiserver.ugr.es/cod/1541521.cif