1. invited talks at the Spring Meeting of the Physical Society of Finland,1992
2. Lahti, and the Nordic Joint Spring Meeting on HTSC, published in Proceedings, Otaniemi, p. 12.1 and Riso National Laboratory. ed. P. Lindgard, p. 210.
3. Anti-Meissner effect in the BiSrCaCuO-system
4. Paramagnetic Meissner effect in Bi high-temperature superconductors