Kabachenko, D. and Lapkhanov, E. 2023. Development and justification of the system methodological approach to assessing the investment business project implementation efficiency under conditions of the external market environment factors impact. Eastern-European Journal of Enterprise Technologies. 3, 3 (123) (Jun. 2023), 6–21. DOI:https://doi.org/10.15587/1729-4061.2023.279621.