Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{AMLG_1969__12_137827, author = {J. Jay Zeman}, title = {Decision procedures for {S3...} and {S4..} .}, journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung}, pages = {155--158}, publisher = {mathdoc}, volume = {12}, year = {1969}, url = {http://geodesic.mathdoc.fr/item/AMLG_1969__12_137827/} }
J. Jay Zeman. Decision procedures for S3... and S4.. .. Archiv für mathematische Logik und Grundlagenforschung, Tome 12 (1969), pp. 155-158. http://geodesic.mathdoc.fr/item/AMLG_1969__12_137827/