1. A simple method for testing measuring machines and machine tools;Bryan;Precision Engineering,1982
2. The measurement of motion errors of NC machine tools and diagnosis of their origins by using telescoping magnetic ball bar method;Kakino;Annals of CIRP,1987
3. Study on the motion accuracy of NC machine tools (1st report) — the measurement and evaluation of motion errors by double ball bar test;Kakino;Journal of JSPE,1986
4. A study on the motion accuracy of NC machine tools (2nd report) — diagnosis of motion error origins by using double ball bar test;Kakino;Journal of JSPE,1986
5. W. Knapp, S. Hrovat, The circular test for testing NC-machine tools (available from S. Hrovat. Trottenstrasse 79, CH-8037 Zurich, Switzerland).