- Author: Heidrun E.K. Hartmann (editor)
- Language: English
- Year: 2017
- Author: Kristiana Hartmann (editor)
- Language: German
- Year: 1994
- Author: Sadakichi Hartmann (editor), Harry W. Lawton (editor), George Knox (editor), Michael Elderman (editor), Thomas F. Barrow (editor)
- Language: English
- Year: 2020
- Author: Philippe Hartmann (editor), EDF (editor)
- Language: French
- Year: 2021
- Author: Andreas Hartmann (editor), Oliwia Murawska (editor)
- Language: German
- Year: 2015
- Author: Heinrich Hartmann (editor), Corinna R. Unger (editor)
- Language: English
- Year: 2014
