@JournalArticle {SIEEUM7349,
	title = {New models for strength and deformability parameters calculation in rock masses using Data Mining techniques},
	journal = {International Journal of Geomechanics},
	volume = {11},
	number = {44},
	year = {2011},
	month = {2011-01-01 00:00:00},
	pages = {44{\textendash}58},
	publisher = {C R C Press},
	issn = {1532-3641},
	url = {http://sieeum.eng.uminho.pt/publicacoes/pub.aspx?pubid=7349},
	author = {Miranda, T. and Correia, A. G. and Santos, M. F. and e Sousa, L. R. and Cortez, P.}
}