Box G.E.P., Draper N.R. Response Surfaces, Mixtures, and Ridge Analyses

2nd Edition. — Wiley, 2007 — 857 p. — ISBN: 978-0-470-05357-7.
A comprehensive introduction to building empirical models, this book presents the general philosophy and computational details of a number of important topics, including factorial designs at two levels; fitting first and second-order models; adequacy of estimation and the use of transformation; and occurrence and elucidation of ridge systems.