Serum neopterin as an immunological marker of disease activity in inflammatory diseases / Freddy Florimond Victor HamerlinckSerum neopterin as an immunological marker of disease activity in inflammatory diseases / Freddy Florimond Victor Hamerlincks-adducts of pteridines and 3-deazapteridines : structure and reactivity / A. NagelSigma-adducts of pyrimidines and pteridines : an NMR study / [door] J. P. Geerts