TY  - JOUR
AU  - J.H. Reif
AU  - J.D. Tygar
AU  - A. Yoshida
TI  - Computability and Complexity of Ray Tracing.
JO  - Discrete & computational geometry
PY  - 1994
SP  - 265
EP  - 288
VL  - 11
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DCG_1994__11_3_131302/
ID  - DCG_1994__11_3_131302
ER  -