R. Syafariani and K. Saputra, “Analisis Kualitas Software IRP (Integrated Resource Planning) Material Ticket Pengaruhnya Terhadap Kepuasan User Directorat Inventory Aerostructure DI PT. Dirgantara Indonesia (PERSERO)”, JATI, vol. 1, no. 1, pp. 61-74, Mar. 2011.