[1] BUDYNAS, R. G., NISBETT, J. K., Shigley's mechanical engineering design. 8th ed. in SI Units. McGraw-Hill series in mechanical engineering. New York: McGraw-Hill, c2008. ISBN 978-007-125763-3.
[2] KUTZ, M., (ed.). Mechanical engineers' handbook. Fourth edition. Hoboken: Wiley, [2014]. ISBN 978-1-118-11283-0 .