@inproceedings{skbss-agmd-03
, author =      "Michael J. Spriggs. and J. Mark Keil and Sergei Bespamyatnikh and Michael Segal and Jack Snoeyink"
, title =       "Approximating the geometric minimum-diameter spanning tree"
, booktitle =   "Proc. 15th Canad. Conf. Comput. Geom."
, site =        "Halifax"
, year =        2003
, pages =       "39--42"
}