- Author: Atif Memon
- Language: English
- Year: 2018
- Author: Adil H. Mouhammed
- Language: English
- Year: 1999
- Author: Joachim Siegert
- Language: German
- Year: 2018
- Author: Jean Meeus
- Language: English
- Year: 1997
- Author: Pavel Cejnar
- Language: English
- Year: 2014
- Author: K.R. Parthasarathy
- Language: English
- Year: 2005
- Author: K.B. Marathe G. Martucci
- Language: English
- Year: 1992
- Author: Roger Cooke
- Language: English
- Year: 2017
- Author: Costas Christodoulides George Christodoulides
- Language: English
- Year: 2017
- Author: Abraham Robinson H.J. Keisler (ed.)
- Language: English
- Year: 1979