http://qiserver.ugr.es/cod/1008922.cif
http://qiserver.ugr.es/cod/1535155.cif
http://qiserver.ugr.es/cod/1537892.cif
http://qiserver.ugr.es/cod/1540014.cif
http://qiserver.ugr.es/cod/8103945.cif
http://qiserver.ugr.es/cod/9001863.cif
http://qiserver.ugr.es/cod/9001864.cif