Sandra Yecker

Facial asymmetry during emotional expression: Gender, valence, and measurement technique

E. Koff, J. Borod, C. Santschi, 1998, Neuropsychologia.

Lateralization of facial emotional expression in schizophrenic and depressed patients.

J. Borod, A. Brozgold, C. Martin, 1999, The Journal of neuropsychiatry and clinical neurosciences.

Changes in Posed Facial Expression of Emotion Across the Adult Life Span

Joan Welkowitz, Murray Alpert, Martin Sliwinski, 2004, Experimental aging research.