FAIZAL BIN OMAR, Mohd; TRIGUNARSYAH, Bambang; WONG, Johnny. Two-Envelope System for Consultant Selection using Weighted Sum Model. International Journal of Engineering and Technology, [S. l.], v. 7, n. 4.27, p. 121–125, 2018. DOI: 10.14419/ijet.v7i4.27.22498. Disponível em: https://sciencepubco.com/index.php/IJET/article/view/22498.. Acesso em: 11 aug. 2025.