Rozhnov, M. S., Yu. V. Kuzmenko, D. M. Melnyk, O. S. Levbarg, A. M. Rak, V. I. Pashun, and L. M. Pohribna. 2020. “State Primary Standard of Gas Volume and Flow Rate Units for the Pressure Range of 1 MPa to 5 MPa (PVTt-15)”. Metrology and Instruments, no. 2 (May), 3-12. https://doi.org/10.33955/2307-2180(2)2020.3-12.