Palm, Adi (1999). ‘‘The Expressivity of Tree Languages for Syntactic Structures.’’
In Hans Peter Kolb and Uwe Mo¨nnich (eds.) The Mathematics of SyntacticStructures: Trees and Their Logics. Berlin: Mouton de Gruyter, 114–31.Partee, Barbara, Alice ter Meulen, and Robert Wall (1990). Mathematica[r]