On the Polynomial Time Computability of Abstract Ray-Tracing Problems.

Shuji Isobe Tetsuo Kuriyama Masahiro Mambo Hiroki Shizuya On the Polynomial Time Computability of Abstract Ray-Tracing Problems. 1209-1213 2005 88-A IEICE Transactions 5 http://dx.doi.org/10.1093/ietfec/e88-a.5.1206 db/journals/ieicet/ieicet88a.html#IsobeKMS05