W.C. Chen, S.N.M. Syed Mohd Judah, S.K. Ghazali, D.I. Munthoub, H. Alias, Z. Mohamad, R. Abd Majid, The Effects of Citric Acid on Thermal and Mechanical Properties of Crosslinked Starch Film, Chemical Engineering Transactions. 83 (2021) 199-204. doi:10.3303/CET2183034.