@article{CMH_1971__46_139464,
     author = {B.G. Eke},
     title = {Comparison {Domains} for the {Problem} of the {Angular} {Derivative}},
     journal = {Commentarii mathematici Helvetici},
     pages = {98},
     publisher = {mathdoc},
     volume = {46},
     year = {1971},
     zbl = {0207.07705},
     language = {un},
     url = {https://geodesic-test.mathdoc.fr/item/CMH_1971__46_139464/}
}