- Author: Stefano Santandrea
- Language: English
- Year: 1976
- Author: Manuela Giordano
- Language: Italian
- Year: 1999
- Author: Giuseppe Flora
- Language: English
- Year: 1993
- Author: Oswald Szemerényi
- Language: English
- Year: 1964
- Author: Wolf Leslau
- Language: English
- Year: 1982
- Author: Wolf Leslau
- Language: English
- Year: 1982
- Author: Leslau Wolf
- Language: English
- Year: 1982
- Author: Jens Høyrup
- Language: English
- Year: 1992
- Author: Giovanni Verardi
- Language: English
- Year: 1994