1. Metabolic Interrelationship of parasitic Trematodes and Molluscs, especially Schistosoma mansoni in Biomphalaria glabrata;Becker;Z. Parasitenkd,1980
2. The ammonia and urea excretion of Biomphalaria glabrata under different physiological conditions: Starvation, infection with Schistosoma mansoni, dry keeping;Becker;Comp. Biochem. Physiol,1978
3. Ammonia forming mechanisms: Deamination of 5′-Adenylic acid (AMP) by some polychaete annelids;Bishop;Comp. Biochem. Physiol,1971
4. Intermediary metabolism in some terrestrial molluscs (Pomatias, Helix and Cepaea);Bryant;Comp. Biochem. Physiol,1964
5. Nitrogen metabolism in molluscs;Campbell,1970