Spiegel, Murray R., author
McGraw-Hill, 1974
Buku Teks
Hicks, John R., author
Clarendon Press, 1957
Buku Teks
Debreu, Gerard.
Wiley, 1959
Buku Teks
Axelsson, O., author
Society for Industrial and Applied Mathematics, 2001
eBooks
Brody, Andrus, author
Academiai Kiado, 1970
Buku Teks