Aubin, Jean-Pierre, author
Springer-Verlag, 1984
Buku Teks
Gear, C. William (Charles William), 1935-, author
Prentice-Hall, 1971
Buku Teks
Lefschetz, Solomon
Dover , 1977
Buku Teks
Coddington, Earl A.
Dover Publications , 1989
Buku Teks
Trench, William F., author
Grove Brooks/Cole, 2000
Buku Teks