Segal, Louis
Frederick A. Praeger, 1959
Buku Referensi
Texnika, 1993
Buku Referensi
Borovkov, K.A.
Society for Industrial and Applied Mathematics, 1994
eBooks
Wheeler, Marcus
Glarendon Press, 1984
Buku Referensi
edited by P. S. Falla
Clarendon Press, 1990
Buku Referensi