1. Abebe A, Akseli I, Sprockel O, Kottala N, Cuitiño AM. Review of bilayer tablet technology. International Journal of Pharmaceutics. 2014; 461(1-2):549-558.
2. Y.W. Chien, Fundamentals of controlled-release of drug administration in: J. Swarbrick (Ed.), Novel Drug Delivery System Marcel Dekker, New York, 1982, pp. 465–574.
3. P. Buri, F. Puisicux, E. Doelker, J.P. Benoit, Formes Pharma centiques Nouvelles, Ed. Technique et Documentation, Lavoisier, Paris, 1985.
4. I.R. Wilding, A.J. Coupe, S.S. Davis, The role of gamma scintigraphy in oral drug delivery, Adv. Drug Deliv. Rev. 1991; 7: 87– 117.
5. Vishwakarma A.G, Mogal R.T, Pawar A.Y et al. Bilayer Tablet - A New Ways in Oral Drug DeliverySystem.International Journal of Pharma Tech Research. 2014; 6(5): 1416-1428.8.