@misc{electrochemical+machining+supported+by+electrode+ultrasonic+vibrations,
    author = {Ruszaj, Adam i Zybura-Skrabalak, Maria i Skoczypiec, Sebastian i Żurek, Robert},
    title = {Electrochemical machining supported by electrode ultrasonic vibrations},
    journal = {ISEM XIII : proceedings of the 13<sup>th</sup> International Symposium for Electromachining, May 9th-11th, 2001, Bilbao, Spain},
    address = {Bilbao},
    publisher = {Fundacion Tekniker},
    date = {2001}
}