van Zalk, Maarten Herman Walter, Van Zalk, Nejra, Kerr, Margaret and Stattin, Hakan (2014) Influences between online-exclusive, conjoint and offline-exclusive friendship networks: The moderating role of shyness. European Journal of Personality, 28 (2). pp. 134-146. ISSN 0890-2070 (Print), 1099-0984 (Online) (doi:https://doi.org/10.1002/per.1895)

van Zalk, Maarten Herman Walter, Kerr, Magraret, Van Zalk, Nejra and Stattin, Håkan (2013) Xenophobia and tolerance toward immigrants in adolescence: Cross-Influence processes within friendships. Journal of Abnormal Child Psychology, 41 (4). pp. 627-639. ISSN 0091-0627 (Print), 1573-2835 (Online) (doi:https://doi.org/10.1007/s10802-012-9694-8)