@article{GDZPPN000366641, title = {On the Number of Minimal 1-Steiner Trees.}, journal = {Discrete \& computational geometry}, volume = {11}, year = {1994}, pages = {29-34}, zbl = {0802.05030}, url = {http://dml.mathdoc.fr/item/GDZPPN000366641} }
Aronov, B.; Eppstein, D.; Bern, M. On the Number of Minimal 1-Steiner Trees.. Discrete & computational geometry, Tome 11 (1994) pp. 29-34. http://gdmltest.u-ga.fr/item/GDZPPN000366641/