@article {Gilmour:2004:0266-4763:1043,
title = "Irregular Four-level Response Surface Designs",
journal = "Journal of Applied Statistics",
parent_itemid = "infobike://tandf/cjas",
publishercode ="tandf",
year = "2004",
volume = "31",
number = "9",
publication date ="2004-01-01T00:00:00",
pages = "1043-1048",
itemtype = "ARTICLE",
issn = "0266-4763",
eissn = "1360-0532",
url = "https://www.ingentaconnect.com/content/tandf/cjas/2004/00000031/00000009/art00001",
doi = "doi:10.1080/0266476042000280391",
keyword = "polynomial regression, pseudo-factors, experimental design, Agricultural experimentation",
author = "Gilmour, Steven",
abstract = "Four-level response surface designs based on regular two-level fractional factorial designs were introduced by Edmondson (1991). Here, the methods are extended to include designs based on irregular two-level fractional factorials. These designs allow orthogonal blocking and require
fewer experimental units than the regular designs.",
}