@article{SLS_1954-1955__2__A10_0,
     author = {Schwartz, L.},
     title = {Les op\'erateurs invariants par rotation, l{\textquoteright}op\'erateur $\Delta $},
     journal = {S\'eminaire Schwartz},
     note = {talk:7},
     pages = {1--6},
     publisher = {Secr\'etariat math\'ematique},
     volume = {2},
     year = {1954-1955},
     language = {fr},
     url = {http://www.numdam.org/item/SLS_1954-1955__2__A10_0/}
}