1. Ostasevicius V, Gaidys R, Gylienė V, Jūrėnas V, Daniulaitis V, Liepinaitis A (2011) Passive optimal tool structures for vibration cutting. J Vibroeng 13(4):769–777
2. Haug EJ, Arora JS (1979) Applied optimal design: mechanical and structural systems. Wiley, NY, p 506
3. Ostasevicius V et al, Twist drill with variable cross-section. SU invention No. 1357151
4. Ostasevicius V, Jurenas V, Juskevicius A (2014) Modified tool structures for effective cutting. Mechanika 20(2):171–176
5. Bathe KJ, Wilson EL (1976) Numerical methods in finite element analysis. Prent-Hall, Englewood Cliffs, NJ USA, p 528