1. A.A. Menovsky and M.J.V. Menken, to be published.
2. R.J. van Wijngaarden, K. Heech, R. Griessen, A.A. Menovsky and M.J.V. Menken, this conference.
3. L. Krusin-Elbaum, A.P. Malozemoff and Y. Yeshurun, preprint.
4. Magnetization of Hard Superconductors
5. P.H. Kes, this conference.