POROSHIN, S.A. Development of the contract system in the procurement of goods, works and services for state and municipal needs (one step forward, two steps back). Management Issues, [S. l.], v. 20, n. 2, p. 291–295, 2016. Disponível em: https://voprosy-upravleniya.owebs.ru/article/view/24295. Acesso em: 9 nov. 2026.