1. UN/ECE, Global technical regulation No. 13: Global technical regulation on hydrogen and fuel cell vehicles, 2013.
2. NIST Handbook 44, 2013 Edition: Specifications, Tolerances, and other Technical Requirements for Weighing and Measuring Devices. Section 3.39: Hydrogen Gas-Measuring Devices – Tentative Code.
3. EMRP Call 2013 – Energy and Environment: SRT-g05; Metrology for hydrogen transport , 2013.
4. Improved methods for comparing gas and hydraulic pressure balances;Kobata;Metrologia,2009
5. OIML R 110: Pressure balance, edition 1994(E), 1994.