Klaus Scherer (1943), holds the chair for Emotion Psychology at the University of Geneva and directs the Geneva Emotion Research Group. He teaches Introduction to the Psychology of Emotion.
His major research is the further theoretical development and empirical test of his Component Process Model of Emotion (CPM).

Among Klaus Scherer books are :

Experiencing Emotion: A Cross-Cultural Study (European Monographs in Social Psychology)
Handbook of Methods in Nonverbal Behavior Research.
Approaches to Emotion
Human Aggression and Conflict: Interdisciplinary Perspectives.

Selected Bibliography : Wikipedia.

Next researcher on emotions: Lisa Feldman Barrett