@article{RSMUP_1992__88__55_0,
     author = {Naumann, J. and Wolf, J.},
     title = {On the interior regularity of weak solutions of degenerate elliptic systems (the case $1$ < $p$ < $2$)},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {55--81},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {88},
     year = {1992},
     mrnumber = {1209116},
     zbl = {0818.35024},
     language = {en},
     url = {http://archive.numdam.org/item/RSMUP_1992__88__55_0/}
}