G. Vega-Gorgojo, L. Slaughter, M. Giese, S. Heggestøyl, J. Klüwer, and A. Waaler. The Semantic Web - ESWC 2016 Satellite Events, Heraklion, Crete, Greece, May 29 - June 2, 2016, Revised Selected Papers, volume 9989 of Lecture Notes in Computer Science, page 146--150. (2016)
G. Sandberg, L. Ulander, J. Fransson, and M. Soja. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), page 1652-1656. Munich, Germany, (2012)