TRAN VAN THANG; VU HUU CHUYEN; DO XUAN HUNG; NGUYEN ANH TUAN; PHAM THI HOA. EFFECTS OF AMPERE, VOLTAGE AND PULSE-ON-TIME ON SURFACE ROUGHNESS IN MACHINING OF C45 STEEL USING EDM MACHINE. UTEHY Journal of Applied Science and Technology, v. 34, p. 55-59, 30 Jun. 2022.