@Article{Shieber_et_al:1990,
AUTHOR = {Shieber, Stuart M. and van Noord, Gertjan and Pereira, Fernando and Moore, Robert},
TITLE = {A Semantic-Head-Driven Generation Algorithm for Unification-Based Formalisms},
YEAR = {1990},
JOURNAL = {Computational Linguistics},
VOLUME = {16},
NUMBER = {1},
PAGES = {30-42} }
