Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
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The 6 references without a DOI — listed, not checked
no DOI — not checkedBernfeld, P. (ed.): The biogenesis of natural compounds, 2nd ed. Oxford: Pergamon Press 1967
no DOI — not checkedEmmons, C. W., Binford, C. H., Utz P. J.: Medical mycology, 2nd ed. Philadelphia: Lea and Febiger 1971
no DOI — not checkedKorzybski, T., Kowszyk-Gindifer, Z., Kurylowicz, W.: Antibiotics. Oxford: Pergamon Press 1967
no DOI — not checkedPfefferle, R.: Ophiocordin, ein Antibiotikum aus Cordyceps ophioglossoides. Untersuchungen zur Isolierung, Charakterisierung und Wirkungsweise. Dissertation, Univ. Tübingen (1975)
no DOI — not checkedSchmidt, F. H., v. Dahl, K.: Zur Methode der enzymatischen Neutralfett-Bestimmung in biologischem Material. Z. klin. Chem. 6, 156?159 (1968)
no DOI — not checkedTurner, W. B.: Fungal metabolites. London-New York: Academic Press 1971
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