1. Coulloudon, B., Eshelman, K., Gianola, J., Habich, N., et al.: Sampling vegetation attributes. Interagency Technical Reference BLM/RS/ST-96/002+1730, Bureau of Land Management’s National Applied Resource Sciences Center, BC-650B. P.O. Box 25047. Denver, Colorado 80225–0047 (1999)
2. Elzinga, C.L., Salzer, D.W., Willoughbyh, J.W.: Measuring and monitoring plant populations. Technical Reference 1730–1 BLM/RS/ST-98/005+1730 (5.1 MB), Bureau of Land Management. Denver, Colorado. USDI, BLM (1998)
3. Yella, S., Nyberg, R.G., Gupta, N., Dougherty, M.: Reliability of manual assessments in determining the types of vegetation on railway trackbeds. In: The 3rd International Workshop on Data Quality and Trust in Big Data (QUAT 2015) with the 16th International Conference on Web Information Systems Engineering (WISE 2015), Miami, Florida (2015)
4. Krippendorff, K.: Recent developments in reliability analysis. In: Annual Meeting of the International Communication Association, Miami, FL, 21–25 May 1992
5. Nyberg, R.G., Gupta, N.K., Yella, S., Dougherty, M.S.: Machine vision for condition monitoring vegetation on railway embankments. In: 6th IET Conference on Railway Condition Monitoring (RCM 2014), pp. 1–7, September 2014