Edward A. Azoff, Eugen J. Ionascu (2000)

The journal of Fourier analysis and applications [[Elektronische Ressource]]

Altaisky, Mikhail V. (2007)

SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]

Bassam Fayad, Maria Saprykina (2005)

Annales scientifiques de l'École Normale Supérieure

Rocha, J.Leonel, Ramos, J.Sousa (2004)

International Journal of Mathematics and Mathematical Sciences

Solis, Francisco J. (2006)

Discrete Dynamics in Nature and Society

Kochergin, A. (2004)

Electronic Research Announcements of the American Mathematical Society [electronic only]