http://qiserver.ugr.es/cod/1518612.cif
http://qiserver.ugr.es/cod/1540381.cif
http://qiserver.ugr.es/cod/1540382.cif
http://qiserver.ugr.es/cod/1540383.cif
http://qiserver.ugr.es/cod/1540384.cif
http://qiserver.ugr.es/cod/1540385.cif
http://qiserver.ugr.es/cod/1540386.cif