Developmental trajectories of perceived friendship intimacy, constructive problem solving, and depression from early to late adolescence
Journal of Abnormal Child Psychology (2009) - Comment
pubmed: 18941888  doi: 10.1007/s10802-008-9273-1  issn: 1573-2835  issn: 0091-0627 

M. H. W. Selfhout, S. J. T. Branje, W. H. J. Meeus