- Author: Ndjountche Tertulien
- Language: English
- Year: 2019
- Author: Li Fule, Li Weitao, Wang Zhihua
- Language: English
- Year: 2017
- Author: Halonen Kari A. I., Waltari Mikko E
- Language: English
- Year: 2002
- Author: Aicher Otl
- Language: German
- Year: 2015
- Author: Veeder Kenton T
- Language: English
- Year: 2015