Improved formulations to the hierarchical health facility location-allocation problem. - James M. Tien; Khalaf El-Tell; Gene R. Simons (IEEE Trans. Syst. Man Cybern., 1983)

The Integration of Analytical Hierarchy Process and Data Envelopment Analysis in a Multi-criteria Decision-making Problem. - Norita B. Ahmad; Daniel Berg; Gene R. Simons (Int. J. Inf. Technol. Decis. Mak., 2006)