1. American Association for Public Opinion Research (AAPOR) (2016) Standard definitions: final dispositions of case codes and outcome rates for surveys, 9th edn. http://www.aapor.org/AAPOR_Main/media/publications/Standard-Definitions20169theditionfinal.pdf
2. Bechtold, WA, Patterson, PL (2005) The enhanced Forest Inventory and Analysis program—national sampling design and estimation procedures. U.S. Department of Agriculture, Forest Service, Southern Research Station, Asheville. General technical report SRS-80
3. Beckler DG, Ott K, Horvath P (2005) Indirect monetary incentives for the 2004 ARMS Phase III Core. United States Department of Agriculture, National Agricultural Statistics Service, Research and Development Division, Washington
4. Box GE, Hunter WG, Hunter JS (2005) Statistics for experimenters: design, innovation, and discovery, 2nd edn. Wiley, New York
5. Butler BJ, Dickinson BJ, Hewes JH et al (2016a) USDA Forest Service, National Woodland Owner Survey 2011–2013: design, implementation, and estimation methods. U.S. Department of Agriculture, Forest Service, Northern Research Station, Newtown Square. Research Bulletin NRS-99