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		Robiyanto, R.
(2019).
 Penggunaan Metode Orthogonal GARCH untuk Meramalkan Matriks Kovarians Return Indeks Harga Saham Sektoral Di Bursa Efek Indonesia.
<em>Jurnal Ekonomi Kuantitatif Terapan, </em>, 167-174.
doi:10.24843/JEKT.2019.v12.i02.p05