http://qiserver.ugr.es/cod/1507770.cif
http://qiserver.ugr.es/cod/1507774.cif
http://qiserver.ugr.es/cod/3000000.cif
http://qiserver.ugr.es/cod/3000009.cif
http://qiserver.ugr.es/cod/9015898.cif
http://qiserver.ugr.es/cod/9016547.cif
http://qiserver.ugr.es/cod/9017809.cif
http://qiserver.ugr.es/cod/9017810.cif
http://qiserver.ugr.es/cod/9017811.cif