TSYB, Ulyana V. IMPROVEMENT OF THE SALES SYSTEM AT PRINTING ENTERPRISES IN THE DPR. Phenomenus, [S. l.], v. 3, n. 1, p. 34–41, 2026. Disponível em: https://ojs.owebs.ru/phenomenus/article/view/32006. Acesso em: 8 nov. 2026.