The Korteweg–de Vries hierarchy as dynamics of closed curves in the plane
Raymond E. Goldstein and Dean M. Petrich
Phys. Rev. Lett. 67, 3203 (1991) - Published 2 December, 1991
Anomalous noise distribution of the interface in two-phase fluid flow
Viktor K. Horváth, Fereydoon Family, and Tamás Vicsek
Phys. Rev. Lett. 67, 3207 (1991) - Published 2 December, 1991