Journal of Polymer Engineering. Berlin, Boston: De Gruyter. Web. Retrieved 22 May. 2013, from http://www.degruyter.com/view/j/polyeng

Journal of Polymer Engineering. Berlin, Boston: De Gruyter. Retrieved 22 May. 2013, from http://www.degruyter.com/view/j/polyeng

Journal of Polymer Engineering. Berlin, Boston: De Gruyter. Retrieved 22 May. 2013, from http://www.degruyter.com/view/j/polyeng