Mohd. Rawoof, K. Rajnarayana and M. Ajitha 2022. Formulation and evaluation of sulfasalazine tablets for colon targeting using 33 response surface method. IJPAR JOURNAL. 6, 4 (Oct. 2022), 618–634. DOI:https://doi.org/10.61096/ijpar.v6.iss4.2017.618-634.