4Ramaswami H, Shaw R S, Anand S. Selection of Opti- mal Set of Cutting Tools for Machining of Polygonal Pockets with Islands[ J ]. The International Journal Ad- vanced Manufacturing Technology, 2011, 53:963 - 977.
5Lee C M, Kim S W, Lee Y H. The Opti,nal Cutter Ori- entation in Ball End Milling of Cantilever - Shaped Thin Plate [ J ]. Journal of Material Processing Technol- ogy, 2004,153 : 800 - 906.
