Kovalchuk A, Shkut O. COMPARATIVE ANALYSIS OF THE 1977 BALTIC SEA LEVEL SYSTEM AND THE EUROPEAN VERTICAL REFERENCE SYSTEM WITHIN THE FRAMEWORK OF TRANSITION TO A UNIFIED EUROPEAN SPATIAL DATA INFRASTRUCTURE. Вісник (військові) [Internet]. 2025 Sep. 29 [cited 2026 Feb. 16];(3(63):93-8. Available from: https://military.bulletin.knu.ua/article/view/6796