@article{10_4153_CMB_1966_032_3,
     author = {Jackson, H. L.},
     title = {Some {Remarks} on {Angular} {Derivatives} and {Julia's} {Lemma}},
     journal = {Canadian mathematical bulletin},
     pages = {233--241},
     year = {1966},
     volume = {9},
     number = {2},
     doi = {10.4153/CMB-1966-032-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1966-032-3/}
}