@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/}
}