http://qiserver.ugr.es/cod/1001818.cif
http://qiserver.ugr.es/cod/1541636.cif
http://qiserver.ugr.es/cod/1542239.cif
http://qiserver.ugr.es/cod/9009619.cif
http://qiserver.ugr.es/cod/9009620.cif
http://qiserver.ugr.es/cod/9009621.cif
http://qiserver.ugr.es/cod/9009622.cif
http://qiserver.ugr.es/cod/9009623.cif