Korenciak, D., M. Gutten, J. Adamec, A. Glowacz, and A. Cichy. “Analysis of Engine Knock Sensor ”. Communications - Scientific Letters of the University of Zilina, Vol. 20, no. 1, Mar. 2018, pp. 37-41, http://journals.uniza.sk/index.php/communications/article/view/43.