1. OIML R 71 Fixed storage tanks—general requirements, OIML (2008).
2. ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories, ISO (2005).
3. ISO 4269:2001 Petroleum and liquid petroleum products—tank calibration by liquid measurement, ISO (2001).
4. X. Weiwei and W. Guodong, Design and implication of a system of measuring oil volume of underground tank, J. Linyi Norm. Univ., 29(3) (2007) 31–33.
5. Tank calibration system, http://en.censtar.com/product/tank-calibration-system.html (April 2015).