http://qiserver.ugr.es/cod/1537768.cif
http://qiserver.ugr.es/cod/1537770.cif
http://qiserver.ugr.es/cod/1538008.cif
http://qiserver.ugr.es/cod/1538645.cif
http://qiserver.ugr.es/cod/1538974.cif
http://qiserver.ugr.es/cod/1539206.cif
http://qiserver.ugr.es/cod/1539459.cif
http://qiserver.ugr.es/cod/1539745.cif
http://qiserver.ugr.es/cod/1540755.cif