1. Taxonomical application of ligule microcharacters in Compositae. 1. Anthemideae, Heliantheae, and Tageteae;BAAGØE;Botanist Tidsskrift,1977
2. Taxonomical application of ligule microcharacters in Compositae. 2. Arctotideae, Astereae, Calenduleae, Eremothamneae, Inuleae, Liabeae, Mutisieae, and Senecioneae;BAAGØE;Botanisk Tidsskrift,1978
3. Compositae;BENTHAM;Genera Ptantarum,1873
4. Neue Phloroglucine-Derivate aus Leontonyx-arten sowie weitere verbindung aus vertretern der tribus Inuleae;BOHLMANN;Phytochemistry,1978