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2. The nitrogenous product of degradation—ammonia, urea, and uric acid—in the hemolymph of the snail Biomphalaria glabrata;Becker;Comp. Biochem. Physiol.,1975
3. The ammonia and urea excretion of Biomphalaria glabrata under different physiological conditons: starvation, infection with Schistosoma mansoni, dry keeping;Becker;Comp. Biochem. Physiol.,1978
4. Sur l'excretion d'ureé et d'acide par l'escargot Helix pomatia L;Bricteux-GrÉgoire;Archs int. Physiol. Biochem.,1962
5. A method of securing bacteriologically sterile snails (Australorbis glabratus);Chernin,1957