@article{bwmeta1.element.desklight-f94f99af-ec75-454c-8cb9-605d262639d2,
author = {A. R. D. Mathias},
title = {A solution of a problem of B. Rotman},
journal = {Colloquium Mathematicae},
volume = {38},
year = {1977},
pages = {39},
zbl = {0405.04001},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-f94f99af-ec75-454c-8cb9-605d262639d2}
}
A. R. D. Mathias. A solution of a problem of B. Rotman. Colloquium Mathematicae, Tome 38 (1977) p. 39. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-f94f99af-ec75-454c-8cb9-605d262639d2/