1. Plant Pathologist's Pocketbook,1968
2. Phoma herbarum Westend., the type-species of the form-genus Phoma Sacc.;Boerema;Persoonia,1964
3. Remarks on species of Phoma referred to Peyronellaea;Boerema;Persoonia,1965
4. Enkele bijzondere schimmelaantastigen IV. (Mycologische Waarnemingen no. 16);Boerema;Gewasbescherming,1972
5. On the specificity of the in vitro and in vivo antifungal activity of benomyl;Bollen;Netherlands Journal of Plant Pathology,1970