@article{ARM_1982__18_1_a2,
     author = {Johnston, Elgin H.},
     title = {An extension of a theorem of {Abian}},
     journal = {Archivum mathematicum},
     pages = {15--18},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {1982},
     mrnumber = {683341},
     zbl = {0518.30004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1982__18_1_a2/}
}