TY JOUR TI Digital Transformation as an Endogenous Factor of Total Factor Productivity of Industrial Enterprises KW total factor productivity KW endogenous cycles KW innovation KW digitalization KW industrial enterprise JO Russian Journal of Management AU Kuzminov, A.N. AU Shelepova, N.S. AU Voloschenko, I.I. PY 2026 IS 14 PB Publishing Center RIOR