1. J.F. Ruff, Flow Measurement: History, in Encyclopedia of Water Science by S.W. Trimble, 2nd Ed., CRC Press, Boca Raton, (2008) pp 388–393.
2. ISO 4185, Measurement of Liquid Flow in Closed Conduits—Weighing Methods, 1st Ed., ISO, Charlottesville, (1980) pp. 1–21.
3. ISO 9368-1, Measurement of Liquid Flow in Closed Conduits by Weighing Methods—Procedure for Checking the Installations, Part 1: Static Weighing System, 1st Ed., ISO, Charlottesville, (1990) pp. 1–22.
4. ISO 5168, Measurement of Liquid Flow in Closed Conduits—Procedure for the Evaluation of Uncertainties, 2nd Ed., ISO, Charlottesville, (2005) pp. 1–65.
5. JCGM 100, Evaluation of measurement data – Guide to the expression of uncertainty in measurement, 1st Ed., JCGM, Viana Do Castelo, (2008) pp. 1–134.