@article{RLIN_2001_9_12_1_a1,
     author = {Priola, Enrico},
     title = {A counterexample to {Schauder} estimates for elliptic operators with unbounded coefficients},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni},
     pages = {15--25},
     publisher = {mathdoc},
     volume = {Ser. 9, 12},
     number = {1},
     year = {2001},
     zbl = {1072.35521},
     mrnumber = {208160},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLIN_2001_9_12_1_a1/}
}