¹B. D. Maxwell, ¹P. B. Hegedus, ¹P. Davis, ²A. Bekkerman, ¹R. Payn, ³J. Sheppard, ⁴N. Silverman, ³C. Izurieta

1. Land Resources and Environmental Sciences Department, Montana State University, Bozeman, MT
2. Department of Agricultural Economics and Economics, Montana State University, Bozeman, MT
3. Department of Computer Science, Montana State University, Bozeman, MT
4. University of Montana, Missoula, MT