@incollection{XUPS_1997____55_0, author = {Zimmermann, Paul}, title = {Calcul formel~: ce qu{\textquoteright}il y a dans la bo{\^\i}te}, booktitle = {Calcul formel}, series = {Journ\'ees math\'ematiques X-UPS}, pages = {55--72}, publisher = {Les \'Editions de l{\textquoteright}\'Ecole polytechnique}, year = {1997}, doi = {10.5802/xups.1997-03}, language = {fr}, url = {http://archive.numdam.org/articles/10.5802/xups.1997-03/} }