CONTENTS
Sini\v{s}a Slijep\v{c}evi\'{c}, Extended Gradient Systems: Dimension One; 503
R.D.S. Oliveira and F. Tari, On pairs of differential 1-forms in the plane; 519
M. Amar, A note on boundary layer effects in periodic homogenization with Dirichlet boundary conditions; 537
H.O. Fattorini, The maximum principle in infinite dimension; 557
L. Malaguti and C. Marcelli, Existence of bounded trajectories via upper and lower solutions; 575
Chun Liu, Dynamic theory for incompressible smectic-A liquid crystals: existence and regularity; 591
B. Coll, A. Gasull, and R. Prohens, Center-focus and isochronous center problems for discontinuous differential equations; 609
Olivier Goubet, Asymptotic smoothing effect for weakly damped forced Korteweg-De Vries equations; 625
Jeffrey Boland, On rigidity properties of contact time changes of locally symmetric geodesic flows; 645
Hitoshi Ishii, Paola Loreti, and Elisabetta Tessitore, A PDE Approach to Stochastic Invariance; 651
Mohammed Aassila, Exact boundary controllability of a coupled system; 665
Alberto Bressan and Marta Lewicka, A uniqueness condition for hyperbolic systems of conservation laws; 673
Bernhard Kawohl, Symmetry results for functions yielding best constants in Sobolev-type inequalities; 683
V.S. Afraimovich and T.R. Young, Multipliers of homoclinic orbits on surfaces and characteristics of associated invariant sets; 691
Holger Teismann, The Schr\"odinger equation with singular time--dependent potentials; 705
John Erik Forn{\ae}ss and Brendan Weickert, A quantized Henon map; 723
J. Sotomayor and M. Zhitomirskii, On pairs of foliations defined by vector fields in the plane; 741