Cox, J. D.; Wagman, D. D.; Medvedev, V. A. (1989), CODATA Key Values for Thermodynamics, New York: Hemisphere, ISBN 0891167587
Cox, J. D.; Wagman, D. D.; Medvedev, V. A. (1989), CODATA Key Values for Thermodynamics, New York: Hemisphere, ISBN 0891167587