Flap, H. & Volker, B. WHO IS ALONE? CAUSES AND CONSEQUENCES OF SMALL NETWORKS. (2010). Proceedings from Sunbelt XXX. Riva del Garda Fierecongressi, Trento, Italy
:.
Volker, B., Flap, H., Mollenhorst, G., Steenbeek, W. & Schutjens, V. LOST LETTERS IN THE NETHERLANDS. COLLECTIVE EFFICACY AND ITS RELATION TO PROSOCIAL ACTION. (2010). Proceedings from Sunbelt XXX. Riva del Garda Fierecongressi, Trento, Italy
:.