1. de Beer, Sir G.: Iktin. — The Geographical Journ.126, pp. 161–162, 1960.
2. Bloch, M.R.: The Social Influence of Salt. - Scientific American,209, No. 1, pp. 88–98, July 1963.
3. Bloch, M. R. &Hester, W. B.: Climate and Volcanic Outbreaks. - Bull. of the Research Council of Israel, Section G.,11, No. 4, pp. 173–4, 1963.
4. Block, M. R. & Martin, H.: D. R. P. 660 490 (1935).
5. Bloch, M. R., Farkas, L. &Spiegler, K. S.: Solar Evaporation of Salt Brines.- Industrial & Engineering Chemistry,43, pp. 1544–1553, July 1951.