CONDENSATION OF COLD NEUTRONS – IDEA OF G.A.GAMOW. CHEMICAL PROPERTIES OF THE NEUTRON MATTER AND ITS PLACE IN THE PERIODIC SYSTEM OF ELEMENTS Journal title: Odessa Astronomical Publications Authors: G. B. Ryazantsev, G. K. Lavrenchenko, I. N. Beckman, I. M. Buntseva, S. S. Nedovesov Subject(s):