Chernova, V. Y., Andronova, I., Degtereva, E. A., Zobov, A. M., & Starostin, V. S. (2019). Activity of Russian Companies in Regional Industrial Value-Added Chains. Advances in Systems Science and Applications, 19(1), 31–43. https://doi.org/10.25728/assa.2019.19.1.649