Peeters, Bert (1993). Conceptual axiology and axiological fields. In Peter Rolf Lutzeier (Ed.), Studien zur Wortfeldtheorie/Studies in lexical field theory (pp. 175-183). Tübingen: Niemeyer.
nsm-approach.net
A resource base of publications using the Natural Semantic Metalanguage approach. 1,100+ detailed notices, and counting!