TY  - RPRT
TI  - Additional Twists on A Continuous Barber - Pole Illusion
AU  - Mulligan, J. B.
AU  - Beutter, B. R.
AU  - Statler, Irving C.
PY  - 1994
UR  - https://ntrs.nasa.gov/citations/20010045534
ID  - 20010045534
ER  -