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  • Melcher U, Varner J. E. (1971) Protein Release by Barley Aleurone Layers. J. Inst. Brew. 77, 456-461.


  • Winkenbach F, Wolk CP, Jost M (1972) Lipids of membranes and of the cell envelope in heterocysts of a blue-green alga.  Planta 107: 69-80 (Heterocyst glycolipids shown to form a layer of the envelope)


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  • Peterson RB, Wolk CP (1978) High recovery of nitrogenase activity and of 55Fe-labeled nitrogenase in heterocysts isolated from Anabaena variabilis. Proc Natl Acad Sci USA 75: 6271-6275 (Resolved a decade-long debate) PDF


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