Cabrera, J. M., A. Al Omar, and J. M. Prado. “Influence of Aluminium Nitride on the Abnormal Grain Growth in a Microalloyed Steel”. Revista De Metalurgia, vol. 31, no. 1, Feb. 1995, pp. 3-13, doi:10.3989/revmetalm.1995.v31.i1.977.