http://qiserver.ugr.es/cod/9012899.cif
http://qiserver.ugr.es/cod/9012900.cif
http://qiserver.ugr.es/cod/9013066.cif
http://qiserver.ugr.es/cod/9013115.cif
http://qiserver.ugr.es/cod/9015556.cif
http://qiserver.ugr.es/cod/9015783.cif
http://qiserver.ugr.es/cod/9017530.cif
http://qiserver.ugr.es/cod/9017531.cif
http://qiserver.ugr.es/cod/9017920.cif