Fragment Yields in the Fission of U235 and U238 by Fast Neutrons Bonyushkin, E. K. ; Zamyatin, Yu. S. ; Kirin, I. S. ; Martynov, N. P. ; Skvortsov, E. A. ; Ushatskii, V. N. Abstract Publication: Soviet Progress in Neutron Physics Pub Date: 1963 Bibcode: 1963spnp.conf..164B