1. A. Pacz: U.S. Patent 1,387,900, 16 August, 1921.
2. R.W. Smith: “Modification of Aluminum-Silicon Alloys,” Solidification of Metals, pp. 224–237, Iron and Steel Inst., London, © 1968.
3. P.B. Crosley and L.F. Mondolfo: “The Modification of Aluminum-Silicon Alloys,” Modern Castings, pp. 89–100 (March, 1966).
4. Serge Bercovici: “Control of Solidification Structures and Properties of Al-Si Alloys,” Paper presented at the 45th. International Foundry Congress, Budapest (October, 1978).
5. R.J. Kissing and J.F. Wallace: “Refinement of Aluminum-Silicon Alloys,” Foundry, Vol. 91(4), pp. 74–79 (April, 1963).