Combined field and laboratory goniometer system - FIGOS and LAGOS. - Stefan Dangel; Mathias Kneubühler; Rolf Kohler; Michael E. Schaepman; Jürg Schopfer; Gabriela Schaepman-Strub; Klaus I. Itten (IGARSS, 2003)

Toward a direct comparison of field and laboratory goniometer measurements. - Stefan Dangel; Michel M. Verstraete; Jürg Schopfer; Mathias Kneubühler; Michael E. Schaepman; Klaus I. Itten (IEEE Trans. Geosci. Remote. Sens., 2005)