1. H.M. Ertunc, K.A. Loparo, H. Ocak, Tool wear condition monitoring in drilling operations using hidden markov models. Int. J. Mach. Tools Manuf. 41(9), 1363–1384 (2001)
2. US Industrial Outlook 1992: Business Forecasts for 350 Industries, US Department of Commerce, International Trade Administration (1992)
3. Deep Hole Drilling Applications Article. Available online at:
http://www.unisig.com/gundrilling-education/deep-hole-drilling-applications.php
4. A. Uysal, M. Altan, E. Altan, Effects of cutting parameters on tool wear in drilling of polymer composite by Taguchi method. Int. J. Adv. Manuf. Technol. 58, 915–921 (2012)
5. J. Mazoff, Drill pint geometry article, Malaysia retrieved December, 21 2016 Available online at:
www.newmantools.com/machines/drillpoint.html