1. Thellier, E., and Thellier, O., Ann. Géophys., 15, 285 (1959).
2. Hanus̆, V., and Krs, M., Nature, 208, 675 (1965).
3. Krs, M., Studia Geoph. Geod., 11, 48 (1967).
4. Lebedev, A. P., Problemy Paleovulkanizma (Moscow, 1963).
5. V´ně, M., Acta Univ. Caro1.-Geolog., 2, 119 (1961).