PETRUS, Himawan Tri Bayu Murti; WIJAYA, Ardyanto; ISKANDAR, Yusuf; BRATAKUSUMA, Danu; SETIAWAN, Hendrik; WIRATNI; ASTUTI, Widi. Pengambilan Lantanum dan Nikel dari Katalis Bekas Menggunakan Asam Sitrat: Peninjauan Performa secara Kuantitatif Menggunakan Response Surface Method (Lantanum and Nickel Recovery from Spent Catalyst Using Citric Acid : Quantitative Performance......). Jurnal Metalurgi, [S. l.], v. 33, n. 2, p. 91–100, 2018. DOI: 10.14203/metalurgi.v33i2.437. Disponível em: https://ejournal.brin.go.id/metalurgi/article/view/6666. Acesso em: 17 mar. 2026.