@article{GDZPPN000365904,
title = {Minimum Steiner Trees in Normed Planes.},
journal = {Discrete \& computational geometry},
volume = {10},
year = {1993},
pages = {351-370},
zbl = {0774.05028},
url = {http://dml.mathdoc.fr/item/GDZPPN000365904}
}
Du, Ding-Zhu; Gao, Biao; Graham, R. L.; Liu, Zi-Cheng; Wan, Peng-Jun. Minimum Steiner Trees in Normed Planes.. Discrete & computational geometry, Tome 10 (1993) pp. 351-370. http://gdmltest.u-ga.fr/item/GDZPPN000365904/