Influence of the cutting edge microgeometry in drilling operation of 42CrMo4 and X5CrNi18-10Vlad-Bogdan Tomoiagă, Marcel Sabin Popa, Stefan Sattel, Glad Conţiu, Ovidiu Virgil Vereş and Marius BozgaMATEC Web Conf., 178 (2018) 01011DOI: https://doi.org/10.1051/matecconf/201817801011