@inproceedings{bs-cspta-97,
author = {Sergei Bespamyatnikh and Michael Segal},
title = {Covering a Set of Points by Two Axis-parallel Boxes},
booktitle = {Proc. 9th Canad. Conf. Comput. Geom.},
year = {1997},
pages = {33--38},
url = {http://www.cccg.ca/proceedings/1997/}
}