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2. “Chemotherapy of Tuberculosis: The Bacteriostatic Action of PAS and Closely Related Compounds upon the Tubercle Bacillus, Together with Animal Experiments and Clinical Trials with PAS,”;Lehmann;Svensk. Lakartidn.,1946
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4. “Comparison of Toleration, Absorption, and Clinical Effect of Potassium PAS, Sodium PAS, Calcium PAS and Rezipas,”;Cohen,1958
5. “Tolerance of Phenyl Para-Aminosalicylate, A Comparative Study,”;Cohen;Dis. Chest,1962