EFFECT OF BAROTHERMAL TREATMENT ON THE CRYSTAL STRUCTURE OF A NICKEL ALLOY AS PROBED BY X-RAY DIFFRACTION ArticleLobanov N.N., Labyntseva O.S., Padalko A.G., Avdyukhin S.P., Veselov A.N.Russian Journal of Inorganic Chemistry. Vol. 52. 2007. P.. 108-111