¹D. W. Franzen, ²G. Endres, ³R. Ashley, ⁴J. Staricka, ⁵J. Lukach, ⁶K. McKay

1. North Dakota State University
2. North Dakota State University Carrington Research and Extension Center
3. North Dakota State University Dickinson Research and Extension Center
4. North Dakota State University Williston Research and Extension Center
5. North Dakota State University Langdon Research and Extension Center
6. Vision Research Park LLC