Love, Clyde E., author
Macmillan, 1943
Buku Teks
Courant, R., author
Blackie and Son Ltd., 1960
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