http://qiserver.ugr.es/cod/1537608.cif
http://qiserver.ugr.es/cod/1537658.cif
http://qiserver.ugr.es/cod/1538825.cif
http://qiserver.ugr.es/cod/1539418.cif
http://qiserver.ugr.es/cod/1539422.cif
http://qiserver.ugr.es/cod/1540148.cif