инь, Хайянь, Чжипин хуо, Андрей Михайлов, and Сюмин Янь. “THEORETICAL REVIEW OF LONG-TERM CARE INSURANCE”. Modern engineering and innovative technologies 3, no. 08-03 (June 29, 2019): 11–18. Accessed April 19, 2025. https://moderntechno.de/index.php/meit/article/view/meit08-03-003.