Peng-Jun Wan, Ding-Zhu Du, Ronald L. Graham. The Steiner ratio for the dual normed plane. Discrete Mathematics, 171(1-3):261-275, 1997. [doi]
@article{WanDG97,
title = {The Steiner ratio for the dual normed plane},
author = {Peng-Jun Wan and Ding-Zhu Du and Ronald L. Graham},
year = {1997},
doi = {10.1016/S0012-365X(96)00080-5},
url = {http://dx.doi.org/10.1016/S0012-365X(96)00080-5},
researchr = {https://researchr.org/publication/WanDG97},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {171},
number = {1-3},
pages = {261-275},
}