@article{PORMA_1941__2_1_114583,
     author = {Surdin, M.},
     title = {�?tude du mouvement permanent de rotation de deux sph\`eres rigides dans un liquide visqueux},
     journal = {Portugaliae mathematica},
     pages = {145--152},
     publisher = {mathdoc},
     volume = {2},
     number = {1},
     year = {1941},
     mrnumber = {0004559},
     zbl = {0025.37502},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1941__2_1_114583/}
}