@Article{GRV-wsl-07,
  author = 	 {Geeraerts, G. and Raskin, J.-F. and {Van~Begin}, L.},
  title = 	 {{W}ell-{S}tructured {L}anguages}},
  journal = 	 {Acta Informatica},
  year = 	 {2007},
  volume = 	 {44},
  number = 	 {3-4},
  pages = 	 {249--288},
}