Lacasta, Javier, Javier Nogueras-Iso, Francisco Javier López-Pellicer, Pedro Rafail Muro-Medrano, and Francisco Javier Zarazaga-Soria. 2007. “ThManager: An Open Source Tool for Creating and Visualizing SKOS”. Information Technology and Libraries 26 (3):39-51. https://doi.org/10.6017/ital.v26i3.3274.