TY  - RPRT
TI  - Time perception for helicopter vibration and noise patterns.
AU  - G R Hawkes
AU  - R W Worsham
PY  - 1970
DO  - 10.1080/00223980.1970.9916822
UR  - https://pubmed.ncbi.nlm.nih.gov/5459675/
ID  - 5459675
ER  -