Suttipong, Ratanaree, et al. “Extended AHP Approach With Latent Factor and Stratum in Prioritizing and Positioning of OTOP Thailand’s Program for Elderly Market”. International Journal of Global Optimization and Its Application, vol. 1, no. 1, Mar. 2022, pp. 22-31, doi:10.56225/ijgoia.v1i1.10.