@article{10_4064_ba58_2_6,
     author = {Fredric D. Ancel and Julia M. Wilson},
     title = {Optics in {Croke{\textendash}Kleiner} {Spaces}},
     journal = {Bulletin of the Polish Academy of Sciences. Mathematics},
     pages = {147--165},
     publisher = {mathdoc},
     volume = {58},
     number = {2},
     year = {2010},
     doi = {10.4064/ba58-2-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ba58-2-6/}
}