MAGDA M. ALY, SAMYAH JASTANIAH, and MOHAMMED GURBAN KUCHARI, “L- ASPARAGINASE FROM STREPTOMYCES sp. ISOLATED FROM THE RHIZOSPHERE OF A PALM TREE, ITS SEPARATION, PURIFICATION AND ANTITUMOR ACTIVITY”, ijpbs, vol. 4, no. 2, pp. 12–21, Jun. 2013.