Regularity bounds on Zakharov system evolutions. Colliander, James; Staffilani, Gigliola — 2002 Electronic Journal of Differential Equations (EJDE) [electronic only]
Global well-posedness for KdV in Sobolev spaces of negative index. Colliander, James E.; Keel, Markus; Staffilani, Gigliola; Takaoka, Hideo; Tao, Terence C. — 2001 Electronic Journal of Differential Equations (EJDE) [electronic only]