John R. Current, David A. Schilling. The Covering Salesman Problem. Transportation Science, 23(3):208-213, 1989. [doi]
@article{CurrentS89,
title = {The Covering Salesman Problem},
author = {John R. Current and David A. Schilling},
year = {1989},
doi = {10.1287/trsc.23.3.208},
url = {http://dx.doi.org/10.1287/trsc.23.3.208},
researchr = {https://researchr.org/publication/CurrentS89},
cites = {0},
citedby = {0},
journal = {Transportation Science},
volume = {23},
number = {3},
pages = {208-213},
}