@article{EJDE_2010__2010__a64,
     author = {Pava,  Jaime Angulo and Hakkaev,  Sevdzhan},
     title = {Ill-posedness for periodic nonlinear dispersive equations},
     journal = {Electronic journal of differential equations},
     year = {2010},
     volume = {2010},
     zbl = {1402.35237},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2010__2010__a64/}
}