1. Barbosa, E. P. et al. (2013) Range control charts revisited: Simpler Tippett-like formulae, its practical implementation, and the study of false alarm. Commun Stat Simul Comput, 42, 247-262.
2. Hozo, S. P. et al. (2005) Estimating the mean and variance from the median, range, and the size of a sample. BMC Med Res Methodol, 5, 13.
3. Itano, S. et al. (2006) Variant of estimation method of aboveground plant biomass in grassland with the gamma model. 2. Proposal of a modified method with visual observation and tests in Zoysia pastures. Grassl Sci, 52, 53-59.
4. Iwasaki, M. (1976) Mapping of distribution of standing crop by use of XY-plotter and some trials of sampling for estimation of standing crop on grassland. Souti sikenjyo kenkyu houkoku (Bull Natl Grassl Res Inst), 9, 1-15 [In Japanese with English summary].
5. MacEachern, S. N. et al. (2002) A new ranked set sample estimator of variance. J R Statist Soc B, 64, 177-188.