@article{AIHPC_2002__19_6_745_0,
     author = {M\"uller, Frank},
     title = {On the continuation of solutions for elliptic equations in two variables},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {745--776},
     publisher = {Elsevier},
     volume = {19},
     number = {6},
     year = {2002},
     mrnumber = {1939085},
     zbl = {1090.35051},
     language = {en},
     url = {http://www.numdam.org/item/AIHPC_2002__19_6_745_0/}
}