@article{IM2_2004_68_6_a7,
     author = {O. G. Smolyanov and S. A. Shkarin},
     title = {Gateaux complex differentiability and continuity},
     journal = {Izvestiya. Mathematics },
     pages = {1217--1227},
     publisher = {mathdoc},
     volume = {68},
     number = {6},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2004_68_6_a7/}
}