Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{PORMA_1947__6_1_114651, author = {Pereira Coelho, R.}, title = {On the groups of certain linkages}, journal = {Portugaliae mathematica}, pages = {57--65}, publisher = {mathdoc}, volume = {6}, number = {1}, year = {1947}, mrnumber = {0024124}, zbl = {0035.25103}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1947__6_1_114651/} }
Pereira Coelho, R. On the groups of certain linkages. Portugaliae mathematica, Tome 6 (1947) no. 1, pp. 57-65. http://geodesic.mathdoc.fr/item/PORMA_1947__6_1_114651/