Grandjean EM, Berthet P, Ruffmann R, Leuenberger P. Efficacy of oral long-term N-acetylcysteine in chronic bronchopulmonary disease: a meta-analysis of published double-blind, placebo-controlled clinical trials. Clin Ther 2000;22(2):209-21.
Stey C, Steurer J, Bachmann S, Medici TC, Tramer MR. The effect of oral N-acetylcysteine in chronic bronchitis: a quantitative systematic review. Eur Respir J 2000;16(2):253-62.
Williamson, J., Boettcher, B., Meister, A., "lntracellular Cysteine Delivery System that Protects Against Toxicity by Promoting Glutathione Synthesis," Proc. Nat. Acad. Sci., 1982.
Se også "Aminosyrer, kilder til" her