@article{10_4153_CJM_1969_161_2,
     author = {Robertson, M. S.},
     title = {Coefficients of {Functions} with {Bounded} {Boundary} {Rotation}},
     journal = {Canadian journal of mathematics},
     pages = {1477--1482},
     year = {1969},
     volume = {21},
     number = {1},
     doi = {10.4153/CJM-1969-161-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-161-2/}
}