E. N. Pan, C. N. Lin, and H. S. Chiou, Effects of lead and solidification conditions on graphite structure ofheavy-section DI, AFS Trans. 103, pp.265-273, 1995.

R. K. Buhr, The effects of Pb, Sb, Bi and Ce on microstructure of heavy section nodular iron castings, AFS Trans, vol.79, pp.247-252, 1971.

A. Reynaud, Oligo-éléments et fontes, Editions Techniques des Industries de Fonderie, 2005.

A. Javaid and C. R. Loper, Production of Heavy-Section Ductile Cast Iron, AFS Trans. 103, pp.135-150, 1995.

J. Lacaze, L. Magnusson-aberg, and J. Sertucha, Review of microstructural features of chunky graphite in ductile cast irons, Proceedings of the "Keith Millis symposium, pp.232-240, 2013.

M. J. Hunter and G. Chadwick, Structure of spheroidal graphite, JISI, vol.210, pp.117-123, 1972.