Abdullah, Roheena, Iqra Farooq, Afshan Kaleem, Mehwish Iqtedar, and Tehreema Iftikhar. “Pectinase Production from Aspergillus Niger IBT-7 Using Solid State Fermentation”. Bangladesh Journal of Botany 47, no. 3 (October 28, 2018): 473-478. Accessed April 24, 2019. https://www.banglajol.info/index.php/BJB/article/view/38714.