sentences:  He also created a group at CERN to investigate neutron scattering at high energies at the Proton Synchrotron (PS) and Intersecting Storage Rings (ISR).These experiments where then continued at the Institute for High Energy Physics (IHEP) in Serpukhov, Russia.The group made important contributions to the study of neutron-proton and neutron-nuclei scattering cross sections.