@article{10_4153_CJM_1986_043_4,
     author = {MacCluer, Barbara D. and Shapiro, Joel H.},
     title = {Angular {Derivatives} and {Compact} {Composition} {Operators} on the {Hardy} and {Bergman} {Spaces}},
     journal = {Canadian journal of mathematics},
     pages = {878--906},
     year = {1986},
     volume = {38},
     number = {4},
     doi = {10.4153/CJM-1986-043-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1986-043-4/}
}