Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{PORMA_1963__22_3_114902, author = {Hsiang, Fu Cheng}, title = {On a theorem of {Burkill-Petersen}}, journal = {Portugaliae mathematica}, pages = {137--141}, publisher = {mathdoc}, volume = {22}, number = {3}, year = {1963}, mrnumber = {0216199}, zbl = {0133.01202}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1963__22_3_114902/} }
Hsiang, Fu Cheng. On a theorem of Burkill-Petersen. Portugaliae mathematica, Tome 22 (1963) no. 3, pp. 137-141. http://geodesic.mathdoc.fr/item/PORMA_1963__22_3_114902/