Levy, Robert
Chapman and Hall, 1995
Buku Teks
edited by V. Lakshmikantham
Academic Press, 1979
Buku Teks
Vidyasagar, M., author
Society for Industrial and Applied Mathematics,
eBooks
edited by Jian-Qiao Sun and Albert C.J. Luo
Springer, 2012
eBooks
Bellman, Richard, author
Academic Press, 1973
Buku Teks