D. Altman, L. McShane, W. Sauerbrei, and S. Taube. PLoS medicine, 9 (5):
e1001216(January 2012)6692<m:linebreak></m:linebreak>M3: doi:10.1371/journal.pmed.1001216;<m:linebreak></m:linebreak>Publicació.
P. Gleason, C. Boushey, J. Harris, and J. Zoellner. Journal of the Academy of Nutrition and Dietetics, 115 (7):
1072-82(July 2015)Anàlisi de dades; PCA; Factor analysis; Introductori.