@article{CMUC_2002__43_4_a2,
     author = {Di Fazio, Giuseppe and Fanciullo, Maria Stella},
     title = {Gradient estimates for elliptic systems in {Carnot-Carath\'eodory} spaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {605--618},
     publisher = {mathdoc},
     volume = {43},
     number = {4},
     year = {2002},
     mrnumber = {2045784},
     zbl = {1090.35058},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2002__43_4_a2/}
}