TY  - RPRT
TI  - Birdsong.
AU  - G F Ball
AU  - S H Hulse
PY  - 1998
DO  - 10.1037//0003-066x.53.1.37
UR  - https://pubmed.ncbi.nlm.nih.gov/9442582/
ID  - 9442582
ER  -