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2. Ostiolate and non ostiolate pyrenomycetes;von Arx;Proceedings of the Koninklijke Nederlandse Akademie van Wetenschappen, series C, Biological and Medical Science,1973
3. The Genera of Fungi Sporulating in Pure Culture;von Arx,1981
4. A key to the species of Gelasinospora;von Arx;Persoonia,1982
5. Über Pleurage verruculosa and die zugehörige Cladorrhinum-Konidienform;von Arx;Nova Hedwigia,1967