Arriaga, F. J. and Rumbero, and Wollenweber, (1996):
Three further Dammarane type triterpenes from the frond exudate of the fern Notholaena rigida.
In: Zeitschrift für Naturforschung. 51c (1996), S. 750-752, [Article]

Arriaga, F. J. and Rumbero, and Wollenweber, and Rumbero, A. and Wollenweber, E. (1996):
Two new triterpenes from the fond exudate of the fern Notholaena rigida.
In: Zeitschrift für Naturforschung. 51c (1996), S. 423-425, [Article]

Toiron, C. and Rumbero, A. and Wollenweber, E. and Arriaga, F. J. and Bruix, M. (1995):
A new skeletal triterpenoid isolated from Empetrum nigrum.
In: Tetrahedron Letters, 36 (36), pp. 6559-6562. Elsevier, ISSN 0040-4039,
DOI: 10.1016/0040-4039(95)01286-Q,
[Article]