- Author: Boldea Ion, Tutelea Lucian
- Language: English
- Year: 2019
- Author: Boldea I., Tutelea Lucian
- Language: English
- Year: 2019
- Author: Boldea Ion, Tutelea Lucian
- Language: English
- Year: 2019
- Author: Boldea I., Tutelea Lucian
- Language: English
- Year: 2010