Gulyaev Yurii Petrovich Russia Saratov State University 1, Saratov State University, Russia, 410012, Saratov, Astrahanskaya st., 83 gulvis@yandex.ru Author's articles One-dimensional equations of motion of a viscous incompressible fluid in flexible tubes 3-dimentional mathematical model of blood flow with secondary heart theory Statement Formulating and Solution of the Problem of Blood Dynamics in Arterial Systems, Using the One-Dimensional Theory