translate English to French: Available at: http://www.ssc.uwo.ca/sociology/popstudies/dp/dp03-09.pdf. Ravanera, Z.R., F. Rajulton and P. Turcotte.
Disponible à : http://dsp-psd.pwgsc.gc.ca/Collection/RH63-1-561-01-03F.pdf. Romano, E., R.H. Baillargeon, H-X Wu, P. Robaey et R. Tremblay.