Nowo Riveli, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2007
UI - Tesis (Membership)
Chan, Hong-Mo, author
World Scientific, 1993
Buku Teks
Gratzer, George, author
Academic Press, 1978
Buku Teks
North-Holland Pub., 1976
Buku Teks
Carmeli, Moshe, author
John Wiley & Sons, 1982
Buku Teks