@PhDThesis{phdlaurent,
  author = {Olivier Laurent},
  title  = {Etude de la polarisation en logique},
  school = {{U}niversit\'e {A}ix-{M}arseille~{II}},
  type   = {Th\`ese de Doctorat},
  month  = mar,
  year   = {2002}
}