Setyo Purwanto, et al. “STRUKTUR DAN SIFAT TUNNELINGMAGNETORESISTANCE SISTEM NANO KOMPOSIT Co-Al2O3 HASIL PROSES HEM”. Jurnal Sains Materi Indonesia, vol. 7, no. 4, Oct. 2026, pp. 285-9, https://ejournal.brin.go.id/jsmi/article/view/6443.