http://qiserver.ugr.es/cod/9017251.cif
http://qiserver.ugr.es/cod/9017252.cif
http://qiserver.ugr.es/cod/9017253.cif
http://qiserver.ugr.es/cod/9017254.cif
http://qiserver.ugr.es/cod/9017881.cif
http://qiserver.ugr.es/cod/9017882.cif
http://qiserver.ugr.es/cod/9017883.cif
http://qiserver.ugr.es/cod/9017884.cif
http://qiserver.ugr.es/cod/9017885.cif