- Author: V. Ilín E. Pozniak
- Language: Spanish
- Year: 1991
- Author: V. Ilín E. Pozniak
- Language: Spanish
- Year: 1991
- Author: V. Ilín E. Pozniak
- Language: Spanish
- Year: 1991
- Author: Watson George Neville, Whittaker Edmund Taylor
- Language: English
- Year: 1996
- Author: London mathematical society., Cutland Nigel
- Language: English
- Year: 1988
- Author: Körner Thomas William
- Language: English
- Year: 2004