1. Blaich, R. 1971. Beiträge zur Physiologie hoízabbauender Basidiomyceten. 113 pp. Thesis, Ruhr Universität Bochum.
2. Blumer, S. 1967. Echte Mehltaupilze (Erysiphaceae). 346 pp. Jena: Fischer Verlag.
3. Booth, C. 1971. Methods in Microbiology. Vol. 4. 795 pp. London: Academic Press.
4. Bray, J. R., and E. Gorham. 1964. Litter production in forests. In Advances in Ecological Research ,J. B. Cragg, ed. Vol. 2, pp. 101–158. New York: Academic Press.
5. Burges, A., and F. Raw. 1967. Soil Biology. 530 pp. London: Academic Press.