Dziak, D. M., B. S. Jachimczyk, and W. J. Kulesza. “An Analysis of Uncertainty and Robustness of Waterjet Machine Positioning Vision System”. Elektronika Ir Elektrotechnika, vol. 19, no. 9, Nov. 2013, pp. 89-92, doi:10.5755/j01.eee.19.9.5656.