@article{articlea0117720,
title   = {Improved wear resistance of P/M tool steel alloy with different vanadium contents after ion nitriding},
author = {Muñoz Riofano, Rosamel Melita and Casteletti, Luiz Carlos and Canale, Lauralice de Campos Franceschini and Totten, George Edward},
year = {2008},
doi = {10.1016/j.wear.2007.08.019},
journal   = {Wear}
}