Lichtenthaler, Martin R.
Stahl, Florian
Kratzert, Daniel
Heidinger, Lorenz
Schleicher, Erik
Hamann, Julian
Himmel, Daniel
Weber, Stefan
Krossing, Ingo
Article History
Received: 12 February 2015
Accepted: 5 August 2015
First Online: 19 October 2015
Competing interests
: The authors declare no competing financial interests.