Brandon, C. J.; Hohlfelder, R. L.; Jackson, M. D.; Oleson, J. P. (2014). "Kurkar". Building for Eternity: the History and Technology of Roman Concrete Engineering in the Sea. Oxbow Books. p. 237. ISBN978-1-78297-420-8.
Francisc Dov Por. The Legacy of Tethys: An Aquatic Biogeography of the Levant. Pages 46-48, 54. Springer, New York, 1989, Monographiae Biologicae (Book 63), ISBN9780792301899. "... around Tel Aviv ridges of aeolanitic sandstone ("kurkar") become prevalent. [...] Along the Lebanese and most of the Syrian coast, calcareous rocks alternate with kurkar ridges. [...] The vermetid platforms are especially well developed on the kurkar sandstones of the Israeli and southern Lebanese shores...." [1]
Maurice Schwartz (editor). Encyclopedia of Coastal Science. Page 74. Springer (Kluwer), Dordrecht, 2005, Encyclopedia of Earth Sciences Series, ISBN9781402038808. [2]