Christian Icking, Rolf Klein. The Two Guards Problem. Int. J. Comput. Geometry Appl., 2(3):257-285, 1992.
@article{IckingK92,
title = {The Two Guards Problem},
author = {Christian Icking and Rolf Klein},
year = {1992},
researchr = {https://researchr.org/publication/IckingK92},
cites = {0},
citedby = {0},
journal = {Int. J. Comput. Geometry Appl.},
volume = {2},
number = {3},
pages = {257-285},
}