Gravitational wave experiments and Baksan project "OGRAN"
  A brief sketch of the present status of gravitational wave experiments is given. Attention is concentrated to recent observations with the gravitational detector network. The project OGRAN for a combined optic-interferometrical and acoustical gravitation wave antenna planned for installation into underground facilities of the Baksan Neutrino Observatory is presented. We describe general principles of the apparatus, expected sensitivity and current characteristics of the antenna prototype; some ways for sensitivity improvement are also discussed. 
L. Bezrukov (1), S. Popov (2), V. Rudenko (2), A. Serdobolskii (2), M.   Skvortsov (3) ((1) Institute for Nuclear Research o...