Private Camera Conversation: a new method for eliciting user responses? - Govert de Vries; Mark Hartevelt; Ron Oosterholt (Behav. Inf. Technol., 1995)

Interaction Design and Human Factors Support in the Development of a Personal Communicator for Children. - Ron Oosterholt; Mieko Kusano; Govert de Vries (CHI, 1996)