http://biblioteca.unisabaneta.edu.co/cgi-bin/koha/opac-search.pl?q=ccl=au:Ramirez Gomez, Jose Fernando and au:Rodrigo Velilla Gomez, Juan Guillermo Velasquez, Jaime Soto Gomez, Alfonso Ortiz Rodriguez, Beatriz Quintero De P., Jose Fernando Ramirez GomezÌ&format=rss2 0 20