Description quoting MALT as a reference

Thermodynamic database MALT group. Thermodynamic database MALT. Kagaku Gijutsu-Sha. 2024. (CD-ROM), available from , (accessed 20xx-mm-dd).
Here, 20xx-mm-dd should be the date the author actually accessed this web page.

If you need a permanent description, use the following.
H. Yokokawa, S. Yamauchi, and T. Matsumoto, "Thermodynamic Database MALT for Windows with gem and CHD" CALPHAD 26(2), 155-166 (2002).