Dania Tigarani Soraya, author
Fakultas Ilmu Komputer Universitas Indonesia, 2007
UI - Skripsi (Membership)
Apt, Krzysztof R., author
Cambridge University Press, 2003
Buku Teks
Springer, 2005
Buku Teks
edited by Michela Milano
Springer-Verlag, 2012
eBooks
Marriot, Kim, author
MIT Press, 1998
Buku Teks