1. P. C. Chang, S. J. Hwang, H. H. Lee, and D. Y. Huang, J. Mat. Proc. Tech., 162-172, 184 (2006).
2. B. V. Hooreweder, D. Moens, R. Boonen, J. P, Kruth, and P. Sas. Polymer Testing, 972–981, 32(2013).
3. R. Bowen, ANTEC99 Conference Proceedings (SPE, NY, 1999), Vol. 3, pp. 1045–1047
4. F. Buja, ANTEC2006 Conference proceedings, (SPE, NY, 2006), pp. 1414–1417
5. F.J. Buja, U.S. Patent No. 7,585,166 (Sep. 8, 2009)