De Broglies initial conception of De Broglie waves.- Wave-particle duality of light: a current perspective.- Wave-particle dualism in matter wave interferometry.- Neutron wave optics studied with ultracold neutrons.- Gespensterfelder.- On the possibility of realising a low intensity interference experiment with a determination of the particle trajectory.- From ghost to real waves: a proposed solution to the wave-particle dilemma.- Permanence of the corpuscular appearance and non linearity of the wave equation.- Could solitons be adiabatic invariants attached to certain non linear equations?.- of the chronon in the theory of electron and the wave-particle duality.- The wave-particle duality as an interplay between order and chaos.- Structures in semiclassical spectra: a question of scale.- Ray optics for diffraction: a useful paradox in a path integral context.- Atomic collision experiments at the border line between classical and quantum mechanics.- On the superposition principle and its physics content.- The probabilistic roots of the quantum mechanical paradoxes.- Causality and symmetry.- A critical analysis of the quantum theory of measurement.- Quantum interference of probabilities and hidden variable theories.- Experimental tests of Bells inequalities.- Tests of the non separability of the $$^{\rm{0}}}^{\rm{0}}}$$ system.- A new approach to testing the separability in microphysics: Rapisardas experiment.- On the possibility of extending the tests of quantum mechanical correlations.- How do we have to change quantum mechanics in order to describe separated systems?.- On the four-dimensional character of micro-physical phenomena.- Dynamics of the reduction of the statevector.- CPT revisted: a manifestly covariant presentation.- Wave-particle duality in a quark model.- Destruction of coherence in nondemolition monitoring: quantum watchdog effect in gravity wave detectors.- Nonlocal hidden variables and nonlocal gauge theories.- A finil#d