TY  - JOUR
A1  - Fischer, Markus
A1  - Lienert, J.
T1  - Experimental inbreeding reduces seed production and germination independent of fragmentation of populations of Swertia perennis
Y1  - 2004
ER  - 
TY  - JOUR
A1  - Fischer, Markus
A1  - Lienert, J.
A1  - Schneller, J.
A1  - Diemer, M.
T1  - Local extinctions of the wetland specialist Swertia perennis : a revistation study based on herbarium records
Y1  - 2002
ER  -