NGUYEN, N.; PHAN, T.; VO, C.; LE, D.; NGUYEN, B.; LE, H. RESEARCH ON THE FORMING ANGLE OF A1050-H14 ALUMINUM MATERIAL PROCESSED BY USING SINGLE POINT INCREMENTAL FORMING TECHNOLOGY (SPIF). Science and Technology Development Journal, v. 12, n. 16, p. 72-79, 15 out. 2009.