http://qiserver.ugr.es/cod/1000034.cif
http://qiserver.ugr.es/cod/8103459.cif
http://qiserver.ugr.es/cod/8103651.cif
http://qiserver.ugr.es/cod/8103663.cif
http://qiserver.ugr.es/cod/8103667.cif
http://qiserver.ugr.es/cod/8104214.cif
http://qiserver.ugr.es/cod/8104258.cif