Nizhegoltseva, E. Control of costs of the organization as an important factor of improving its efficiency [Текст] / E. Nizhegoltseva, scientific supervisor R. Ostapenko // Theoretical foundations of modern science and practice : The VIII International Science Conference, Lisbon, November 8-10, 2021. - 2021. - С. 37-40.
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Ostapenko, R.