Stimulation of activity in online communities. - Herre van Oostendorp; Ferdy van Varik (ECCE, 2011)

Engaging children in cars through a robot companion. - Liang Hiah; Tatiana Sidorenkova; Lilia Perez Romero; Yu-Fang Teh; Ferdy van Varik; Jacques M. B. Terken; Dalila Szostak (IDC, 2013)

Enhancing Online Community Activity: Development and validation of the CA framework. - Ferdy van Varik; Herre van Oostendorp (J. Comput. Mediat. Commun., 2013)