Trojanova, M., K. Zgutova, L. Pepucha, and M. Pitonak. “Inter-Laboratory Comparison of Accredited Laboratories in Terms of Benchmarking in Slovakia”. Communications - Scientific Letters of the University of Zilina, Vol. 12, no. 3A, Oct. 2010, pp. 28-35, http://journals.uniza.sk/index.php/communications/article/view/941.