1. “High Temperature Technology,”;Ackermann,1964
2. “Ergodic Theory and Information.”;Billingsley,1965
3. Brewer, L. (1963). Proc. Robert A. Welch Foundation Conf., Chem., Res., VI, Topics Modern Inorg. Chem. (W. O. Milligan, ed.), pp. 47–74. Houston, Texas.