Ashis SenGupta, Tapas Samanta, Ayanendranath Basu, editors
World Scientific, 2015
Buku Teks
Hanushek, Eric A., author
Academic Press, 1977
Buku Teks
Srinath, M.D.
John Wiley & Sons, 1979
Buku Teks
Keating, Jerome P., author
Society for Industrial and Applied Mathematics, 1993
eBooks
edited by H.T. Banks
Society for Industrial and Applied Mathematics, 1992
eBooks