Fonseca, Jose, author
Routledge, 2001
Buku Teks
Downey, Rodney G., author
Springer, 2013
Buku Teks
Winograd, Shmuel, author
Society for Industrial and Applied Mathematics, 1980
eBooks
Artikel Jurnal
Papadimitriou, Christos H., author
Prentice Hall of India, 1997
Buku Teks