@article{10_4064_fm_156_1_67_72,
     author = {W. A. Kirk},
     title = {Hyperconvexity of {\ensuremath{\mathbb{R}}-trees}},
     journal = {Fundamenta Mathematicae},
     pages = {67--72},
     publisher = {mathdoc},
     volume = {156},
     number = {1},
     year = {1998},
     doi = {10.4064/fm-156-1-67-72},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-156-1-67-72/}
}