URL https://www.researchgate.net/profile/Yikai_Chai/publication/347757784/figure/fig1/AS:11431281084334153@1663139964201/Schematic-diagram-of-the-RRI-Model-Sayama-T-2013_Q320.jpg
URL2 https://www.researchgate.net/figure/Schematic-diagram-of-the-RRI-Model-Sayama-T-2013_fig1_347757784
