1. The measurement of ammonia in whole blood, erythrocytes, and plasma;Seligson;J Lab Clin Med,1951
2. Ammonia;Colombo,1981
3. Direkte Plasmaammoniakbestimmung ohne Enteiweissung. Verbesserter enzymatischer Ammoniaktest, 2;Da Fonseca-Wollheim;Mitt Z Klin Chem Klin Biochem,1973
4. Hyperammonemia in pediatrics: a challenge to clinical chemists;Bachmann,1982
5. A simple microtechnique for the determination of blood ammonia and a note on the effect of exercise;McCullough;Clin Chim Acta,1968