@article{articleef934499,
title   = {3 D surface parameters (ISO 25178-2): actual meaning of Spk and its relationship to Vmp},
author = {Franco, Luiz Alberto Pereira das Neves and Sinatora, Amilton},
year = {2015},
doi = {10.1016/j.precisioneng.2014.10.011},
journal   = {Precision Engineering}
}