@article{CMUC_2002_43_1_a5,
     author = {Montgomery-Smith, Stephen and Pokorn\'y, Milan},
     title = {A counterexample to the smoothness of the solution  to an equation arising in fluid mechanics},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {61--75},
     year = {2002},
     volume = {43},
     number = {1},
     mrnumber = {1903307},
     zbl = {1090.35146},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2002_43_1_a5/}
}