@article {Schreuder:1984:0015-749X:803,title = "Alternative Estimators for Point-Poisson Sampling",
journal = "Forest Science",
parent_itemid = "infobike://saf/fs",
publishercode ="saf",
year = "1984",
volume = "30",
number = "3",
publication date ="1984-09-01T00:00:00",
pages = "803-812",
itemtype = "ARTICLE",
issn = "0015-749X",
url = "http://www.ingentaconnect.com/content/saf/fs/1984/00000030/00000003/art00033",
keyword = "negative variance estimates, Jackknife, Raj estimator, 3P, pps with and without replacement"
author = "Schreuder, H. T. and Brink, G. E. and Wilson, R. L.",
abstract = "A new jackknife-based variance estimate is derived for point-Poisson (point-3P) sampling. This variance estimate is shown to be superior to most estimates derived assuming point-pps with or without replacement sampling, for a population with a very strong linear relationship between the variable of interest and the covariate used for sample selection and estimation. Only a variance estimate suggested by L. Grosenbaugh is equally good. This variance estimate is recommended since it is simplest to compute. Both the standard point-Poisson and a proposed unbiased jackknife estimate of total volume are about equally efficient. Forest Sci. 30:803-812.",
}