Phạm Bá Thịnh and Nguyễn Thị Duyên 2022. Applying the philosophy of "lmmutable, thousands of variables" of President Ho Chi Minh in the prevention and control of the Covid-19 pandemic at present in Vietnam . Tạp chí Nghiên cứu Khoa học Công đoàn. 24 (May 2022), 33.