@inproceedings{skbss-agmst-03
, author = {M. J. Spriggs and J. M. Keil and S. Bespamyatnikh and M. Segal and
J. Snoeyink}
, title = {Approximating the Geometric Minimum-Spanning Tree}
, booktitle = {Proc. 15th Canad. Conf. Comput. Geom.}
, year = {2003}
, pages = {39--42}
}