PRAHSANT L. PINGALE, and RAVINDRA R.P. “EFFECT OF PIPER NIGRUM ON IN-VITRO RELEASE OF ISONIAZID FROM ORAL MICROSPHERES”. International Journal of Pharma and Bio Sciences, vol. 4, no. 1, Mar. 2013, pp. 1027-36, https://ijpbs.net/index.php/journal/article/view/1991.