@article{AMLG_1982__22_138000,
     author = {R.H. Cowen},
     title = {Solving algebraic problems in propositional logic by tableau.},
     journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
     pages = {187--190},
     publisher = {mathdoc},
     volume = {22},
     year = {1982},
     zbl = {0487.03004},
     url = {http://geodesic.mathdoc.fr/item/AMLG_1982__22_138000/}
}