The relation between derivations and syntactical structures in phrase-structure grammars

Jürgen Eickel, Jacques Loeckx
1972 Journal of computer and system sciences (Print)  
Conditions for a phrase-structure grammar (Chomsky 0-type grammar) are established which warrant that any of its derivations univocally defines a syntactical structure of the sentence. The simplifications for the particular cases of contextsensitive and context-free grammars are indicated.
doi:10.1016/s0022-0000(72)80006-0 fatcat:f2akjxq62rg6vhuh76hhhdouxu