Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS2_1970__26_166121, author = {Kung-Fu Ng}, title = {On a {Computation} {Rule} for {Polars.}}, journal = {Mathematica Scandinavica}, pages = {14--16}, publisher = {mathdoc}, volume = {26}, year = {1970}, zbl = {0189.42603}, url = {http://geodesic.mathdoc.fr/item/MS2_1970__26_166121/} }
Kung-Fu Ng. On a Computation Rule for Polars.. Mathematica Scandinavica, Tome 26 (1970), pp. 14-16. http://geodesic.mathdoc.fr/item/MS2_1970__26_166121/