@article{MAN_1992__293_4_164941,
     author = {Shigeo Kawai},
     title = {Concerning a type of {Sobolev} inequality on the sphere.},
     journal = {Mathematische Annalen},
     pages = {7--16},
     year = {1992},
     volume = {293},
     number = {4},
     zbl = {0735.53029},
     url = {http://geodesic.mathdoc.fr/item/MAN_1992__293_4_164941/}
}