TY - RPRT TI - Patterns of behaviour problems among pre-school children. AU - E J Sonuga-Barke AU - M Thompson AU - J Stevenson AU - D Viney PY - 1997 DO - 10.1017/s0033291797005291 UR - https://pubmed.ncbi.nlm.nih.gov/9234468/ ID - 9234468 ER -