The nature and predictors of undercontrolled and internalizing problem trajectories across early childhood
Journal of Abnormal Child Psychology (2009) - Comment
pubmed: 18766436  doi: 10.1007/s10802-008-9268-y  issn: 1573-2835  issn: 0091-0627 

Kristin S. Mathiesen, Ann Sanson, Mike Stoolmiller, Evalill Karevold