M. El-Anwar Osman, W. El-Shouny, R. Talat, and H. El-Zahaby, “POLYSACCHARIDES PRODUCTION FROM SOME PSEUDOMONAS SYRINGAE PATHOVARS AS AFFECTED BY DIFFERENT TYPES OF CULTURE MEDIA”, J microb biotech food sci, vol. 1, no. 5, pp. 1305–1318, Apr. 2012.