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2. R. Ebner, “Influence of Ageing, Sampling Site and Machining of Test Specimens Upon Tensile Strength and Hardness of Grey Cast Iron,” BCIRA, 50 689–91 (1963).
3. C.A. Beiser, Evans, E. B., in Modern Casting, 1956.
4. P.B. Burgess, “Age Hardening Ferritic Malleable,” AFS Transactions, 172–9 (1969).
5. P.V. Novichkov, “Thermocyclic Aging of Cast Iron at 200 — 280 Degrees C,” Liteinoe Proizvodstvo (in Russian), 31–5 (1970).