http://qiserver.ugr.es/cod/8103828.cif
http://qiserver.ugr.es/cod/8104221.cif
http://qiserver.ugr.es/cod/8104222.cif
http://qiserver.ugr.es/cod/8104223.cif
http://qiserver.ugr.es/cod/8104224.cif
http://qiserver.ugr.es/cod/8104225.cif
http://qiserver.ugr.es/cod/8104263.cif
http://qiserver.ugr.es/cod/8104272.cif