On the symmetric angle-restricted nearest neighbor problem.

Alok Aggarwal Youngcheul Wee On the symmetric angle-restricted nearest neighbor problem. 121-126 2004 92 Inf. Process. Lett. 3 http://dx.doi.org/10.1016/j.ipl.2004.07.003 db/journals/ipl/ipl92.html#AggarwalW04