Horizon theorems for lines and polygons
Marshall Wayne Bern,
David Eppstein,
Paul E. Plassman,
and Frances F. Yao
Discrete and Computational Geometry: Papers from the DIMACS Special Year, DIMACS Ser. Discrete Math. and Theoretical Computer Science 6, Jacob E. Goodman,
Richard Pollack,
and William Steiger, ed., Amer. Math. Soc., 1991, pp. 45–66
Mathematical Reviews 92j:52023, 1992
Reviewed by Robert Connelly