1. Buchbinder, B., Begin, Z.B., Friedman, G.M.: Pleistocene algal tufa of Lake Lisan, Dead Sea area, Israel. Israel J. Earth Sci. 23, 131–138 (1974).
2. Byrnes, J.G.: Notes on the nature and environmental significance of the Receptaculitaceae. Lethaia 1, 368–381 (1968).
3. Campbell, K.S.W., Holloway, O.J., Smith, W.D.: A new receptaculitid genus Hexahactron, and the relationships of the Receptaculitaceae. Pa1aeontographica 146, 52–77 (1974).
4. Elliott, G.F.: The Permian calcareous alga Gymnocodium. Micropaleontology 1, 83–91 (1955).
5. Foster, M.: Ordovician receptaculitids from California and their significance. Lethaia 5, 35–65 (1973).