Heyden, 1980
Buku Teks
Rai, Suresh, author
Calif IEEE Computer Society Press , 1990
Buku Teks
Lorin, Harold, author
John Wiley & Sons, 1980
Buku Teks
NCC Publications, 1983
Buku Teks
Peleg, David, author
Society for Industrial and Applied Mathematics, 2000
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