Shan, Jiahui, et al. “Demand Stratification for Functional Priority Determination of Wooden Care Beds Based on I-Kano and Better-Worse Metrics”. BioResources, vol. 21, no. 4, Sept. 2026, pp. 10518-39, https://ojs.bioresources.com/index.php/BRJ/article/view/26018.