1. Csizmadia, I. G., M. C. Harrison, J. W. Moskowitz, S. Seung, B. T. Sutcliffe, and M. P. Barnett: ?Program Set for Non-Empirical Molecular Calculations POLYATOM?, program QCPE 47 A of the Quantum Chemistry Program Exchange, Indiana University, Bloomington, Indiana, U.S.A.
2. Krauss, M.: J. Res. nat. Bur. Standards A 68, 635 (1964).
3. Moskowitz, J. W., and M. C. Harrison: J. chem. Physics 42, 1726 (1965).
4. - private communication.
5. Reeves, C. M., and M. C. Harrison: J. chem. Physics 39, 11 (1963).