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2. R.L. Bergner, H.A. Leupold, J.T. Breslin, F. Rothwarf, and A. Tauber, Paper 4C-8, 24th Annual Conference on Magnetism and Magnetic Materials, November 1978, Cleveland, Ohio.
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4. F. Rothwarf, H.A. Leupold, A. Tauber, J.T. Breslin, and R.L. Bergner, Proc. of the Fourth International Workshop and Their Applications, Hakone, Japan, May 22–24, 1979.
5. M.G. Benz, R.P. Laforce and D.L. Martin, AIP Conf. Proc. 18, 1173 (1974).