@article{AIF_1978__28_2_221_0, author = {Helffer, Bernard}, title = {Addition de variables et application \`a la r\'egularit\'e}, journal = {Annales de l'Institut Fourier}, pages = {221--231}, publisher = {Institut Fourier}, address = {Grenoble}, volume = {28}, number = {2}, year = {1978}, doi = {10.5802/aif.697}, zbl = {0365.35012}, mrnumber = {58 #1566}, language = {fr}, url = {https://aif.centre-mersenne.org/articles/10.5802/aif.697/} }