Maintaining the quality of life using Diakof in symptomatic relief of persistent cough
Kala Suhas Kulkarni, MD, Medical Advisor, R&D Center, The Himalaya Drug Company, Makali, Bangalore (India), Indian Journal of Clinical Practice (2001): (12), 3, 97-100.

Evaluation of efficacy of Diakof in chronic cough in diabetic patients
Rangamani, K., Professor of Medicine, Bowring and Lady Curzon Hospitals, Shivajinagar, Bangalore, India, The Antiseptic (2001): (98), 9, 332-335.