1. MI 2412-97, The State System of Measurements: Water-Based Heat-Supply Systems: Equations for Measuring the Heat Energy and Amount of Heating Medium [in Russian].
2. V. A. Medvedev, Izmer. Tekh., No. 11, 69 (2004);
3. Measurement Techniques, 47, No. 11, 1132 (2004).
4. GOST R 8.591-2002, The State System of Measurements: Two-Channel Heat Meters for Water-Based Heat Supply Systems: Standardizing the Limits to the Permissible Error in Measurements of Heat Energy Used by Subscribers [in Russian].
5. GOST R EN 1434.1-2006, Heat Meters, Part 1: General Specifications (IDT) [in Russian].