Kajanek, D.; Hadzima, B.; Pastorek, F. Errata: Communications – Scientific Letters of the University of Zilina, Vol. 20, No. 3, 2018, „Electrochemical Characterization of Az31 Magnesium Alloy Treated by Ultrasonic Impact Peening (Uip)“, Pp. 24-29. The Proper Acknowledgement Should Be As Follow. Communications 2019, 21, 75-79.