ŞIMŞEK, Enes; ETI, Serkan; YÜKSEL, Serhat; DINÇER, Hasan. Evaluation of Purchasing Process in Solar Energy Investment Projects via SIWEC Methodology. Spectrum of Operational Research, [S. l.], v. 3, n. 1, p. 81–86, 2026. DOI: 10.31181/sor31202636. Disponível em: http://sor-journal.org/index.php/sor/article/view/36. Acesso em: 16 apr. 2026.