- Author: Nicolai Hartmann
- Language: Romanian
- Year: 1997
- Author: Friedel G Hartmann
- Language: English
- Year: 2013
- Author: R R K Hartmann, Gregory James
- Language: English
- Year: 1998
- Author: Ervin Hartmann, International Union of Crystallography
- Language: English
- Year: 1984
- Author: Hans Jürgen Korsch, Hansjörg Jodl, Timo Hartmann
- Language: English
- Year: 2008
- Author: R. Diehl (auth.) Roland Diehl Dieter H. Hartmann Nikos Prantzos (eds.)
- Language: English
- Year: 2011
- Author: L. Hartmann
- Language: English
- Year: 1997