Coherent processes in nuclei and crystals

The history of the discovery of the nucleon—nucleon interaction is outlined with special reference to the contribution of the Frank Laboratory of Neutron Physics (FLNP) at JINR, to this field of research. The author lays down a programme of joint studies to be carried out by the Institute of Theoretical and Experimental Physics (ITEP), FLNP at JINR, the Russian Research Centre 'Kurchatov Institute' (KI) on the IBR-2 reactor, and Moscow Engineering-Physics Institute (MEPI).