1. (a) U.J. Slomczynska, M.W. Dimmic, W.P. Haakenson Jr., A.S. Wideman, US Patent 9,051,309, June 9th, 2015;
2. (b) U. Slomczynska, M.S. South, G. Bunkers, D. Edgecomb, D. Wyse-Pester, S. Selness, Y. Ding, J. Christiansen, K. Ediger, W. Miller, P. Charumilind, G. Hartmann, J. Williams, M. Dimmic, B. Shortt, W. Haakenson, A. Wideman, M. Crawford, M. Hresko, J. McCarter, 248th ACS National Meeting & Exposition, San Francisco, CA, United States, August 10???14, 2014 (2014), AGRO-39.
3. (a) W.H. Miller, C.R. Graham, D.L. Brown, US Patent 9,040,711, May 26th, 2015;
4. (b) W.H. Miller, C.R. Graham, D.L. Brown, US Patent 9,273,037, March 1st, 2016.
5. A.W. Weston, US Patent 2,853,493, September 23rd, 1958.