High-energy astrophysics American and Soviet perspectives : proceedings from the U.S.-USSR Workshop on High-Energy Astrophysics, June 18-July 1, 1989 - Lewin, Walter H. G.; Clark, George W.; Si͡uni͡aev, R. A. (Rashid Alievich); Trivers, Kathleen Kearney; Abramson, David M. (National Academy Press, 1991)