TY  - RPRT
TI  - Interpersonal problem solving in preschool and first grade: developmental change and ecological validity.
AU  - E Youngstrom
AU  - J M Wolpaw
AU  - J L Kogos
AU  - K Schoff
AU  - B Ackerman
AU  - C Izard
PY  - 2000
DO  - 10.1207/s15374424jccp2904_11
UR  - https://pubmed.ncbi.nlm.nih.gov/11126636/
ID  - 11126636
ER  -