Strategic Supplier Selection in Payment Industry: A Multi-Criteria Solution for Insufficient and Interrelated Data Sources. - Siavash Hekmat; Maghsoud Amiri; Golshan Madraki (Int. J. Inf. Technol. Decis. Mak., 2021)

A strategy-based framework for supplier selection: a grey PCA-DEA approach. - Adel Hatami-Marbini; Siavash Hekmat; Per J. Agrell (Oper. Res., 2022)