1. 1.A. E. Amal and A. M. Madbouly, European Academic Research, VI, Iss. 2: 823(2018); https://www.euacademic.org/UploadArticle/3563.pdf
2. 2.M. Aminian, M. Bakhshandeh, M. Allahbakhshian-Farsani, E. Bakhshandeh,and N. Shakeri, Iran J. Nucl. Med., 25, No. 2: 129 (2017); arti-cle_26416_49d90bc1b31c04bf5219d25b46cec8ac.pdf (tums.ac.ir)
3. 3.C. Tyagi and A. Sharma, AIP Conference Proceedings, 1728: 020151 (2016); https://doi.org/10.1063/1.4946202
4. 4.M. H. Makled, E. Sheha, T. S. Shanap, and M. K. El-Mansy, J. of Adv. Res., 4,No. 6: 531 (2013); DOI: 10.1016/j.jare.2012.09.007
5. 5.K. Qiu and A. N. Netravali, Biodegradable Polymers. Vol. 1: Advancement inBiodegradation Study and Applications (Ed. C.-C. Chu) (New York: Nova Sci-ence Publishers, Inc.: 2015), p. 325.