SYNTHESIS AND STRUCTURE OF NONSTOICHIOMETRIC δ-NbN1+y FILMS E.V. SHALAEVA, M.V. KUZNETSOV, R.S. BARYSHEV et B.V. MITROFANOV J. Phys. IV France, 02 C2 (1991) C2-209-C2-216 DOI: 10.1051/jp4:1991226