- Author: Leo J. Schneider
- Language: English
- Year: 2000
- Author: Murray S. Klamkin
- Language: English
- Year: 1986
- Author: Grossman I. Magnus W.
- Language: English
- Year: 1992
- Author: Svetoslav Savchev Titu Andreescu
- Language: English
- Year: 2002
- Author: W. W. Sawyer
- Language: English
- Year: 1962
- Author: Nicholas D. Kazarinoff
- Language: English
- Year: 1975
- Author: Israel Grossman Wilhelm Magnus
- Language: English
- Year: 1975
- Author: Charles T Salkind
- Language: English
- Year: 1966
- Author: Philip D Straffin
- Language: English
- Year: 1993
- Author: Kurschak J.
- Language: English
- Year: 1963