Albers, J. (1992). Version 2.0 of the TXYZ thermal analysis program, TXYZ20. U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O..

Albers, John. Version 2.0 of the TXYZ Thermal Analysis Program, TXYZ20. Gaithersburg, MD : Washington, DC: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O., 1992.

Albers, John. Version 2.0 of the TXYZ Thermal Analysis Program, TXYZ20. U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology ; For sale by the Supt. of Docs., U.S. G.P.O., 1992.