@article{AIHPC_2004__21_5_735_0,
     author = {Duzaar, Frank and Mingione, Giuseppe},
     title = {Regularity for degenerate elliptic problems via $p$-harmonic approximation},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {735--766},
     publisher = {Elsevier},
     volume = {21},
     number = {5},
     year = {2004},
     doi = {10.1016/j.anihpc.2003.09.003},
     zbl = {02116187},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1016/j.anihpc.2003.09.003/}
}