Khalyavin, O., & Khalyavina, L. (2026). Ballistic Gravimeter of the Poltava Gravimetric Observatory. History of Creation and Modernization. S. Subbotin Institute of Geophysics of the NAS of Ukraine. https://doi.org/10.24028/gj.v48i3.356209
Чикаго стиль цитування (17-те видання)Khalyavin, O.I, та L.Ya Khalyavina. Ballistic Gravimeter of the Poltava Gravimetric Observatory. History of Creation and Modernization. S. Subbotin Institute of Geophysics of the NAS of Ukraine, 2026. https://doi.org/10.24028/gj.v48i3.356209.
Стиль цитування MLA (8-ме видання)Khalyavin, O.I, та L.Ya Khalyavina. Ballistic Gravimeter of the Poltava Gravimetric Observatory. History of Creation and Modernization. S. Subbotin Institute of Geophysics of the NAS of Ukraine, 2026. https://doi.org/10.24028/gj.v48i3.356209.