A note on the Eigenvalue problems in crystal statistics The use of the proper time in quantum electrodynamics Possible existence of a heavy neutral meson Parametric representation of General Green's functions Dispersion relations for form factors Axial vector currents conservation in weak interactions A "superconductor" model for elementary particles and its consequences; A dynamical model of elementary particles based on analogy with superconductivity I (with G. Jona-Lasino) Chirality conservation with soft pion production (with D. Lurie) Infinite multiplets S-matrix in semiclassical approximation Quark model and the factorization of Veneziano amplitude Duality and hadrodynamics Generalized Hamiltonian dynamics Strings, vortices and gauge fields The BCS mechanisms, quasi-supersymmetry and the Fermion mass matrix