TY  - RPRT
TI  - An optical illusion-premolar with three cusps.
AU  - K H Thunthy
PY  - 1978
DO  - 10.1016/0030-4220(78)90162-7
UR  - https://pubmed.ncbi.nlm.nih.gov/276801/
ID  - 276801
ER  -