Implementasi sistem terintegrasi six sigma dan importance performance analysis untuk meningkatkan kualitas jaringan telekomunikasi HSDPA dan kepuasan pelanggan = Implementation of integrated system six sigma and importance performance analysis for quality improvement of HSDPA telecommunication network and customer satisfaction / Slamet Pranoto - Slamet Pranoto, author (Fakultas Teknik Universitas Indonesia, 2013)