1. Analysis of the karst aquifer structure of the Lamalou area (Hérault, France) with ground penetrating radar;Al-fares;Journal of Applied Geophysics,2002
2. Astruc, J.-G., Coustou, J.-C., Cubaynes, R., Galharague, J., Lorblanchet, M., Marcouly, R., Pélissié, T., Rey, J., 1994. Notice explicative, Carte géol. France (1:50,000), Gramat sheet (833). Orléans: BRGM, 69p. Geologic map by J.G. Astruc.
3. Integration of penetrating radar and microgravimetric methods to map shallow caves;Beres;Journal of Applied Geophysics,2001
4. A comparison of EM induction and GRP methods in areas of karst;Doolittle;Geoderma,1998