MAMMADOV, Elchin. PIECEWISE LINEAR ECONOMIC-MATHEMATICAL MODELS WITH REGARD TO UNACCOUNTED FACTORS INFLUENCE IN 3-DIMENSIONAL VECTOR SPACE. International Journal of Engineering Science and Applied Mathematics (IJESAM), [S. l.], v. 14, n. 12, p. 67–89, 2023. Disponível em: https://zapjournals.com/Journals/index.php/ijesam/article/view/1611. Acesso em: 23 jun. 2025.