Muñiz, G., A. Conde, B. J. Fernández, R. Varela, I. García, and J. Damborenea. 2003. “Laser Heat Treatment of Steel Cutting Blades for Agricultural Uses”. Revista De Metalurgia 39 (6):443-51. https://doi.org/10.3989/revmetalm.2003.v39.i6.358.