TY JOUR TI PSYCHOLOGICAL ASPECTS OF MOTIVATION: BOTH INTERNAL AND EXTERNAL FACTORS AFFECT LABOR PRODUCTIVITY KW external and internal motivation KW job satisfaction KW material incentives KW motivation management JO Bulletin of the Angarsk State Technical University AU Panchuk, E.Y. PY 2024 IS 1 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»