PROBLEM ASPECTS OF IMPLEMENTATION OF THE QUANTITY COST TECHNIQUES BY «PREVENTION, APPRAISAL AND FAILURE» MODEL AT CONTRACTORS. Economic journal of Lesya Ukrainka Volyn National University, [S. l.], v. 3, n. 15, p. 94–101, 2018. DOI: 10.29038/2411-4014-2018-03-94-101. Disponível em: https://echas.vnu.edu.ua/index.php/echas/article/view/372.. Acesso em: 4 may. 2024.