Mabruri, Efendi, et al. “PENGARUH SOLUTION ANNEALING DAN AGING PADA KAWAT PADUAN SHAPE MEMORY Ni-Ti DAN Ni-Ti-Cu[The Influence of Solution Annealing and Aging on Ni-Ti and Ni-Ti-Cu Shape Memory Alloy Wire]”. Jurnal Metalurgi, vol. 27, no. 2, Aug. 2012, pp. 77-84, doi:10.14203/metalurgi.v27i2.142.