PT  - JOURNAL ARTICLE
AU  - Richard B. Langley
TI  - Navigator Notes
AID  - 10.1002/navi.456
DP  - 2021 Dec 21
TA  - NAVIGATION: Journal of the Institute of Navigation
PG  - 669--671
VI  - 68
IP  - 4
4099  - https://navi.ion.org/content/68/4/669.short
4100  - https://navi.ion.org/content/68/4/669.full
SO  - NAVIGATION2021 Dec 21; 68