@article{GDZPPN002401304, title = {Note on a Theorem of Livingstone and Wagner.}, journal = {Mathematische Zeitschrift}, volume = {99}, year = {1967}, pages = {351-352}, language = {en}, url = {http://dml.mathdoc.fr/item/GDZPPN002401304} }
Robinson, G. de de. Note on a Theorem of Livingstone and Wagner.. Mathematische Zeitschrift, Tome 99 (1967) pp. 351-352. http://gdmltest.u-ga.fr/item/GDZPPN002401304/