TY  - RPRT
TI  - Why do pitched horizontal lines have such a small effect on visually perceived eye level?
AU  - Post, R. B.
AU  - Welch, R. B.
AU  - Clark, V. D.
PY  - 2000
UR  - https://ntrs.nasa.gov/citations/20040141490
ID  - 20040141490
ER  -