@article{10_4064_cm_39_2_233_242,
     author = {A. Kucia},
     title = {On {P(m)-ultrafilters} on {N}},
     journal = {Colloquium Mathematicum},
     pages = {233--242},
     publisher = {mathdoc},
     volume = {39},
     number = {2},
     year = {1978},
     doi = {10.4064/cm-39-2-233-242},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-39-2-233-242/}
}