Targeting and mapping expansive soils (Loiret, France): geometrical analysis of laboratory soil spectra in the short-wave infrared domain (1100-2500 nm)Grégory Dufréchou, Audrey Hohmann, Anne Bourguignon et Gilles GrandjeanBull. Soc. géol. France , 187 3 (2016) 169-181DOI: https://doi.org/10.2113/gssgfbull.187.3.169