@article{10_4064_cm_64_2_287_291,
     author = {Piotr Haj{\l}asz and Pawe{\l} Strzelecki},
     title = {On the differentiability of solutions of quasilinear elliptic equations},
     journal = {Colloquium Mathematicum},
     pages = {287--291},
     publisher = {mathdoc},
     volume = {64},
     number = {2},
     year = {1993},
     doi = {10.4064/cm-64-2-287-291},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-64-2-287-291/}
}