WaterSteamPro - is the registered program and trade mark of the Moscow Power Engineering Institute (technical university).

Mathcad - is the registered trade mark of MathSoft, Inc.

Microsoft, Microsoft Windows, Microsoft Visual Basic, Microsoft Visual Studio, Microsoft Visual C++, Microsoft Office, Visual Basic for Applications (VBA), Microsoft Excel - are the registered trade marks of Microsoft Corp. Windows NT - is the registered trade mark of Microsoft Corp.

Delphi - is the registered trade mark of Borland, Inc.

Other names and appellations are trade marks or registered trade marks of their proprietors.

Section "Structure and Regions of IAPWS-IF97" based upon book: A.A. Alexandrov, B.A. Grigoriev - Tables for thermalphysics properties of water and steam. Reference book. - Moscow.: MPEI, 1999. - 168 pages.