- Author: Pavel Etingof Vladimir S. Retakh I. M. Singer
- Language: English
- Year: 2005
- Author: Marius van der Put Michael F. Singer
- Language: English
- Year: 2003
- Author: I.M & Thorpe John A Singer
- Language: English
- Year: 1967
- Author: Peter Singer
- Language: English
- Year: 2001
- Author: Singer et al.
- Language: English
- Author: Henson Rubel Singer.
- Language: English
- Author: Compoint Singer.
- Language: English