Preface -- On the Topology of Quasiperiodic Functions / S.M. Gusein-Zade -- Statistics of Klein Polyhedra and Multidimensional Continued Fractions / M.L. Kontsevich and Yu. M. Suhov -- C'-Generic Properties of Boundary Operators in the Novikov Complex / A. Pajitnov -- Pseudoperiodic Mappings / D.A. Panov -- How Do the Leaves of a Closed 1-form Wind Around a Surface? / Anton Zorich