TY  - RPRT
TI  - Distance determined by the angular declination below the horizon.
AU  - T L Ooi
AU  - B Wu
AU  - Z J He
PY  - 2001
DO  - 10.1038/35102562
UR  - https://pubmed.ncbi.nlm.nih.gov/11700556/
ID  - 11700556
ER  -