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Gomaa, K. and Kraus, J. and Roßkopf, F. and Röper, H. and Franz, Gerhard (1992) Antitumor and Immunological Activity of a ß-(1.3/1.6) Glucan from Glomerella cingulata. Journal of cancer research and clinical oncology 118 (2), pp. 136-140.
Roßkopf, F. and Kraus, J. and Franz, Gerhard (1992) Immunological and antitumor effects of coumarin and some derivatives. Die Pharmazie 47 (2), pp. 139-142.
Wozniewski, Th. and Kraus, J. and Roßkopf, F. (1992) Pflanzliche Immunstimulation - Utopie oder Wirklichkeit. Der deutsche Apotheker 44, pp. 73-79.
Kraus, J. and Roßkopf, F. (1991) Relationship between Immunological Activity in vitro and Antitumor Effect in vivo of Various Polysaccharides. Pharmaceutical and pharmacological letters 1, pp. 11-14.