@article{10_4064_cm_43_1_161_181,
     author = {A. E. Livingston and J. A. Pfaltzgraff},
     title = {Structure and extremal problems for classes of functions analytic in an annulus},
     journal = {Colloquium Mathematicum},
     pages = {161--181},
     publisher = {mathdoc},
     volume = {43},
     number = {1},
     year = {1980},
     doi = {10.4064/cm-43-1-161-181},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-43-1-161-181/}
}