Nowicki, R., Świercz, R., Kopytowski, A. and Vagaská, A. 2019. Surface texture of S 718 after electrical discharge machining assisted with ultrasonic vibration of a tool electrode. Welding Technology Review. 91, 2 (Feb. 2019). DOI:https://doi.org/10.26628/wtr.v91i2.1021.