Wollenweber, Eckhard ; Henrich, ; Mann, ; Roitman, (1996):
Lipophilic exudate constituents of some Rosaceae from the Southwestern USA.
In: Zeitschrift für Naturforschung. 51c (1996), S. 296-300, [Article]

Wollenweber, Eckhard ; Roitman, ; Roitman, (1996):
A novel methyl ether of quercetagetin from Chromolaena odorata leaf exudate.
In: Biochemical systematics and ecology. 24 (1996), S. 479-480, [Article]

Wollenweber, Eckhard ; Dörr, ; Roitman, ; Schilling, (1995):
External flavonoids of three species of Viguiera, section Hypargyrea (Asteraceae).
In: Zeitschrift für Naturforschung. 50c (1995), S. 588-590, [Article]

Wollenweber, Eckhard ; Mann, ; Dörr, ; Fritz, ; Roitman, ; Yatskievych, (1995):
Exudate flavonoids in three Ambrosia species.
In: Natural product letters. 7 (1995), S. 109-116, [Article]