1. K. N. Strafford and J. M. Towell, The Formation and Properties of Nitrides—I. Fundamental Aspects, to be published.
2. K. N. Strafford and J. M. Towell, The Formation and Properties of Nitrides—II. Experimental Results, to be published.
3. Thermochemistry of the Rare Earth Carbides, Nitrides and Sulphides for Steelmaking;Gschneidner,1971