@article{SM_2016_207_10_a7,
     author = {A. G. O'Farrell},
     title = {Derivatives at the boundary for analytic {Lipschitz} functions},
     journal = {Sbornik. Mathematics},
     pages = {1471--1490},
     publisher = {mathdoc},
     volume = {207},
     number = {10},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2016_207_10_a7/}
}