@article{10_4064_cm_68_2_207_218,
     author = {Francisco Vieli},
     title = {Moyennes sph\'eriques et op\'erateur de {Helmholtz} it\'er\'e},
     journal = {Colloquium Mathematicum},
     pages = {207--218},
     publisher = {mathdoc},
     volume = {68},
     number = {2},
     year = {1995},
     doi = {10.4064/cm-68-2-207-218},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-68-2-207-218/}
}