Farlow, Stanley J.
John Wiley & Sons, 1982
Buku Teks
Ames, William F.
Academic Press, 1969
Buku Teks SO
Ames, William F.
Academic Press, 1972
Buku Teks SO
edited by Luis A. Caffarelli, Xavier Cabre, Juan Soler
Springer, 2012
eBooks
Logan, J. David
John Wiley & Sons, 1994
Buku Teks