Determining the height difference between two points using optical clocks, an experiment in Wuhan: Hoang Anh The1,*, Dau Khac Tai1, Shen Wenbin2. GeocartaGIS [Internet]. 2025 Jan. 2 [cited 2026 June 8];10(01):31-6. Available from: https://vjol.vista.gov.vn/tapchi-VUSTA/article/view/95783