Solution of the Master Equation for Bak-Sneppen Model of Biological   Evolution in Finite Ecosystem
  The master equations describing processes of biological evolution in the framework of the random neighbor Bak-Sneppen model are studied. For the eqosystem of $N$ species they are solved exactly and asymptotical behavior of this solution for large $N$ is analyzed. 
Yu. M. Pis`mak (Department of Theoretical Physics of Saint-Petersburg   State University)