Silveira, M. L., and B. A. Rezende. “DRILLING OF SANDWICH MATERIAL USING DRILLS WITH DIFFERENT GEOMETRIES: CONSTRUCTION OF A MATHEMATICAL MODEL TO PREDICT THE FORWARD FORCE”. The Journal of Engineering and Exact Sciences, vol. 6, no. 3, Sept. 2020, pp. 0397-02, doi:10.18540/jcecvl6iss3pp0397-0402.