Courant, R., author
Blackie and Son Ltd., 1960
Buku Teks
Ayres, Frank, 1901-1994, author
McGraw-Hill, 1981
Buku Teks
Piskunov, N.S. (Nikolai Semenovich), author
Mir, 1974
Buku Teks
Piskunov, N.S. (Nikolai Semenovich), author
Mir, 1981
Buku Teks
Piskunov, N.S. (Nikolai Semenovich), author
Groningen, P. Noordhoff
Buku Teks