@article{10_4064_sm_98_1_53_71,
     author = {Frank Beatrous},
     title = {Boundary estimates for derivatives of harmonic functions},
     journal = {Studia Mathematica},
     pages = {53--71},
     publisher = {mathdoc},
     volume = {98},
     number = {1},
     year = {1991},
     doi = {10.4064/sm-98-1-53-71},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-98-1-53-71/}
}