Borojev, L., M. Zeljković, J. Rekecki, R. Gatalo, J. Andrić, and V. Šijakov. “Contribution to Investigation of Behavior of Machining Center Vital Elements”. Journal of Production Engineering, vol. 9, no. 9, Dec. 1992, pp. 11-21, doi:10.24867/JPE-1992-09-011.