Ali, Z., F. M. Anjum, and T. Zahoor. “Short Communication Production of Lactic Acid from Corn Cobs Through Fermentation by Lactobacillus Delbruekii”. Biological Sciences - PJSIR, vol. 50, no. 6, Dec. 2007, pp. 408-10, http://v2.pjsir.org/index.php/biological-sciences/article/view/1074.