Practice makes perfect: The longitudinal effect of adolescents' instant messaging on their ability to initiate offline friendships. - Maria Koutamanis; Helen G. M. Vossen; Jochen Peter; Patti M. Valkenburg (Comput. Hum. Behav., 2013)

Adolescents' comments in social media: Why do adolescents receive negative feedback and who is most at risk? - Maria Koutamanis; Helen G. M. Vossen; Patti M. Valkenburg (Comput. Hum. Behav., 2015)

The concurrent and longitudinal relationships between adolescents' use of social network sites and their social self-esteem. - Patti M. Valkenburg; Maria Koutamanis; Helen G. M. Vossen (Comput. Hum. Behav., 2017)