Sang Won Bae Chunseok Lee Sunghee Choi On Exact Solutions to the Euclidean Bottleneck Steiner Tree Problem. 105-116 2009 WALCOM http://dx.doi.org/10.1007/978-3-642-00202-1_10 conf/walcom/2009 db/conf/walcom/walcom2009.html#BaeLC09