Negim, Elsayed, Raichan Rakhmetullayeva, Gulzhakhan Yeligbayeva, Perizat Urkimbaeva, Saltanat Primzharova, Daulet Kaldybekov, Jamal Khatib, Grigory Mun, and Craig W. 2014. “Improving Biodegradability of Polyvinyl Alcohol Starch Blend Films for Packaging Applications”. International Journal of Basic and Applied Sciences 3 (3): 263-73. https://doi.org/10.14419/ijbas.v3i3.2842.