- Author: Ralph J. Lellé, Volkmar Küppers
- Language: German
- Year: 2023
- Author: Ralph J. Lellé Volkmar Küppers
- Language: English
- Year: 2023
- Author: Univ.-Prof. Dr. med. Ralph J. Lellé PD Dr. med. Volkmar Küppers (auth.)
- Language: German
- Year: 2014
- Author: Univ.-Prof. Dr. med. Ralph J. Lellé MIAC Priv.-Doz. Dr. med. Volkmar Küppers (auth.)
- Language: German
- Year: 2008