Glaz, Joseph, author
Springer, 2001
Buku Teks
Universitas Indonesia, 2008
UI - Skripsi (Membership)
Puspa Cempaka Sari Putri, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2010
UI - Skripsi Open
Arnold, Barry C., author
Society for Industrial and Applied Mathematics, 2008
eBooks
Harter, H. Leon, author
Ohio: American Sciences Press, 1977
Buku Teks