Oki Rahadianto Sutopo https://scholar.google.com/citations?user=plCtfuIAAAAJ&hl=id&oi=ao Universitas Gadjah Mada Indonesia
Agustinus Aryo Lukisworo https://scholar.google.com/citations?user=dOdtGioAAAAJ&hl=id&oi=ao Universitas Atma Jaya Yogyakarta Indonesia
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