@article{oai:niigata-u.repo.nii.ac.jp:00002546,
author = {Innami, Nobuhiro and Kim, Byung Hak},
issue = {6},
journal = {Proceedings of the Japan Academy, Ser. A Mathematical Sciences, Proceedings of the Japan Academy, Ser. A Mathematical Sciences},
month = {},
note = {We prove that the Steiner ratio for hyperbokic surfaces is 1/2.},
pages = {77--79},
title = {Steiner ratio for hyperbolic surfaces},
volume = {82},
year = {2006}
}