@article{10_1017_S0017089513000438,
     author = {FAVER, TIMOTHY and KOCHALSKI, KATELYNN and MURUGAN, MATHAV KISHORE and VERHEGGEN, HEIDI and WESSON, ELIZABETH and WESTON, ANTHONY},
     title = {ROUNDNESS {PROPERTIES} {OF} {ULTRAMETRIC} {SPACES}},
     journal = {Glasgow mathematical journal},
     pages = {519--535},
     year = {2014},
     volume = {56},
     number = {3},
     doi = {10.1017/S0017089513000438},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089513000438/}
}