[1. HRUBEC J. Riadenie kvality. Nitra: ES SPU, 2001, p. 203. ISBN 80-7137-849-6]Search in Google Scholar
[2. ŠKŮRKOVÁ, K., ŠESTÁK, M. The capability of turning process by screws production.]Search in Google Scholar
[In Production engineering. - Novosibirsk: Novosibirsk: State Technical University, 2009, s. 49-56. ISBN 978-5-7782-1165-0]Search in Google Scholar
[3. HRUBEC, J. a kol. Integrovaný manažérsky systém. Nitra: ES SPU, 2009, 543 s. ISBN 978-80-552-0231-0]Search in Google Scholar