Source: https://www.researchgate.net/profile/Yves-Le-Bissonnais/publication/267808098_ESTIMATION_DE_LA_STABILITE_STRUCTURALE_DES_SOLS_SEMI-ARIDES_MAROCAINS_INFLUENCE_DES_TECHNIQUES_CULTURALES_SIMPLIFIEES/links/5465ddac0cf2f5eb17ffe865/ESTIMATION-DE-LA-STABILITE-STRUCTURALE-DES-SOLS-SEMI-ARIDES-MAROCAINS-INFLUENCE-DES-TECHNIQUES-CULTURALES-SIMPLIFIEES.pdf