@conference {SIEEUM5310,
	title = {Influence of non-saturation and particle size distribution on the stiffness of granite materials},
	journal = {XIII Panamerican Conference on Soil Mechanics and Geotechnical Engineering},
	year = {2007},
	month = {2007-01-01 00:00:00},
	address = {Isla Margarita Venezuela},
	keywords = {Effective stress, Suction, Terzaghi{\textquoteright}s and Bishop{\textquoteright}s, Triaxial tests, Unsaturated soils},
	url = {http://sieeum.eng.uminho.pt/publicacoes/pub.aspx?pubid=5310},
	author = {Correia, A. G. and Ferreira, S. R. and Fleureau, J. - M.}
}