Higher-Order Coloured Unification and Natural Language Semantics
  In this paper, we show that Higher-Order Coloured Unification - a form of unification developed for automated theorem proving - provides a general theory for modeling the interface between the interpretation process and other sources of linguistic, non semantic information. In particular, it provides the general theory for the Primary Occurrence Restriction which (Dalrymple, Shieber and Pereira, 1991)'s analysis called for. 
Claire Gardent and Michael Kohlhase (Universitaet des Saarlandes,   Saarbruecken, Germany)