Jiménez, J. A., Acosta, P., Frommeyer, G., & Ruano, O. A. (1998). Microstructure and mechanical properties of two tool steels with ultrahigh boron content. Revista De Metalurgia, 34(Extra), 300–304. https://doi.org/10.3989/revmetalm.1998.v34.iExtra.758