R V Grunau

A comparison of two measures of facial activity during pain in the newborn child.

K. Craig, M. Whitfield, H. Hadjistavropoulos, 1994, Journal of pediatric psychology.

Issues of assessment of pain and discomfort in neonates.

R. Grunau, B. Stevens, C. Johnston, 1995, Journal of obstetric, gynecologic, and neonatal nursing : JOGNN.