@article(2007-semiring-lattice-parsing-applied-to-cyk,
  author = {Salvador España Boquera and Jorge Gorbe Moya and Francisco Julian Zamora Martínez},
  title = {Semiring Lattice Parsing Applied to CYK},
  year = {2007},
  journal = {Lecture Notes in Computer Science},
  volume = {4478},
  pages = {603-610}
)