@article{10_21136_MB_2004_134047,
     author = {B\'alint, V. and Vacek, O.},
     title = {Radius-invariant graphs},
     journal = {Mathematica Bohemica},
     pages = {361--377},
     publisher = {mathdoc},
     volume = {129},
     number = {4},
     year = {2004},
     doi = {10.21136/MB.2004.134047},
     mrnumber = {2102610},
     zbl = {1080.05505},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.2004.134047/}
}