Shabalin Pavel Leonidovich Russia Kazan State University of Architecture and Engineering, 1, Zelenaya str., 420043, Kazan, Tatarstan, Russia ProfessorDoctor of Physics and Mathematicspavel.shabalin@mail.ru Author's articles Investigation Riemann – Hilbert Boundary Value Problem with Infinite Index on Circle Certain Caseofthe Riemann–Hilbert Boundary Value Problem with Peculiarities of Coefficients The M.A. Lavrentiev Inverse Problem on Mapping of Half-Plane Onto Polygon with Infinite Set of Vertices