@article{AIF_1973__23_4_271_0, author = {Lumer, Gunter}, title = {Perturbation de g\'en\'erateurs infinit\'esimaux du type {\guillemotleft}changement de temps{\guillemotright}}, journal = {Annales de l'Institut Fourier}, pages = {271--279}, publisher = {Imprimerie Durand}, address = {28 - Luisant}, volume = {23}, number = {4}, year = {1973}, doi = {10.5802/aif.492}, mrnumber = {49 #3596}, zbl = {0263.47035}, language = {fr}, url = {https://aif.centre-mersenne.org/articles/10.5802/aif.492/} }