The following publications are possibly variants of this publication:
- Searching for Mobile Intruders in a Polygonal Region by a Group of Mobile SearchersMasafumi Yamashita, Hideki Umemoto, Ichiro Suzuki, Tsunehiko Kameda. algorithmica, 31(2):208-236, 2001. [doi]
- Searching for a Mobile Intruder in a Polygonal RegionIchiro Suzuki, Masafumi Yamashita. SICOMP, 21(5):863-888, 1992.
- Searching for a mobile intruder in a corridor: the open edge variant of the polygon search problemD. Crass, Ichiro Suzuki, Masafumi Yamashita. ijcga, 5(4):397-412, 1995.