@article{MS2_1983__52_166838,
     author = {Hiroshi Yamaguchi},
     title = {An extension of a theorem of {F.} {Forelli.}},
     journal = {Mathematica Scandinavica},
     pages = {145--160},
     publisher = {mathdoc},
     volume = {52},
     year = {1983},
     zbl = {0518.43001},
     url = {http://geodesic.mathdoc.fr/item/MS2_1983__52_166838/}
}