TY  - RPRT
TI  - Six-year developmental course of internalizing and externalizing problem behaviors.
AU  - F C Verhulst
AU  - J van der Ende
PY  - 1992
DO  - 10.1097/00004583-199209000-00022
UR  - https://pubmed.ncbi.nlm.nih.gov/1400127/
ID  - 1400127
ER  -