@article{GDZPPN002343886, title = {W. ACKERMANN: Solvable cases of the decision problem}, journal = {Mathematica Scandinavica}, volume = {3}, year = {1955}, pages = {174-176}, url = {http://dml.mathdoc.fr/item/GDZPPN002343886} }
SKOLEM, TH. W. ACKERMANN: Solvable cases of the decision problem. Mathematica Scandinavica, Tome 3 (1955) pp. 174-176. http://gdmltest.u-ga.fr/item/GDZPPN002343886/