Siahaan, Toman
Universitas Indonesia, 1992
UI - Skripsi (Membership)
Universitas Indonesia, 2004
UI - Tesis (Membership)
Universitas Indonesia, 1991
UI - Skripsi (Membership)
Universitas Indonesia, 1993
UI - Skripsi (Membership)
Gustriyansyah
Universitas Indonesia, 2008
UI - Skripsi (Open)