J. de LEON, I. SOULEIMAN, A. GLUMINEAU, and G. SCHREIER
On Nonlinear Equivalence and Backstepping Observer.  /521-546/

C. VILLANUEVA-NOVELO, S. EELIKOVSKY, and B. CASTILLO-TOLEDO
Structurally Stable Design of Output Regulation for a Class of Nonlinear Systems.  /547-564 /

Mohamed Ali HAMMAMI and Hamadi JERBI
Separation Principle for Nonlinear Systems Using a Bilinear Approximation.  /565-573/

Mohsen RAZZAGHI and Yadollah ORDOKHANI
Solution for a Classical Problem in the Calculus of Variations via Rationalized Haar Functions.  /575-583/

Friedrich LIESE and Ingo STEINKE
A Note on the Rate of Convergence of Local Polynomial Estimators in Regression Models.  /585-603/

Marie HUŠKOVÁ and Aleš SLABÝ
Permutation Tests for Multiple Changes.  /605-622 /