System of key performance indicators as a method for executive decision-makingV.B. Trukhmanov, E.A. Pervushkina, A.A. Statuev, V.N. Belov and A.M. VolodinE3S Web Conf., 296 (2021) 02003DOI: https://doi.org/10.1051/e3sconf/202129602003