- Author: Giuliano Gliozzi
- Language: French
- Author: Jaroslav Štika
- Language: Czech
- Year: 2018
- Author: Gloria Goodwin Raheja
- Language: English
- Year: 1988
- Author: Mihály Hoppál Juha Pentikäinen
- Language: English
- Year: 1992
- Author: Mihaly Hoppal
- Language: English
- Year: 2000
- Author: Arlena Siobhan Liggins
- Language: English
- Year: 2019
- Author: Richard Warren Lieban
- Language: English
- Year: 1977
- Author: Johannes Wilbert (ed).
- Language: English
- Year: 1978
