Analysis and mitigation of the factors limiting the efficiency of high power distributed feedback diode lasers Christoph Matthias Schultz E-Book (pdf)

Süßwasserflora von Mitteleuropa, Bd. 21/1 Freshwater Flora of Central Europe, Vol. 21/1: Fungi Holger Thüs, Matthias Schultz E-Book (pdf)

Die Flechten Deutschlands Volkmar Wirth, Markus Hauck, Matthias Schultz E-Book (pdf)