The following publications are possibly variants of this publication:
- An Incremental Algorithm for Constructing Shortest Watchman RoutesXuehou Tan, Tomio Hirata, Yasuyoshi Inagaki. sersc-isa 1991: 163-175
- An incremental algorithm for constructing shortest watchman routesXuehou Tan, Tomio Hirata, Yasuyoshi Inagaki. ijcga, 3(4):351-365, 1993.
- Corrigendum to An Incremental Algorithm for Constructing Shortest Watchman Routes Xuehou Tan, Tomio Hirata, Yasuyoshi Inagaki. ijcga, 9(3):319-323, 1999.