@article{PMF_1925-1926_34_1_a7,
     author = {Stamm, Edward},
     title = {Geometrische {Theorie} logischer {Funktionen.} {Beitrag} zur {Algebra} der {Logik}},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {119--158},
     publisher = {mathdoc},
     volume = {34},
     number = {1},
     year = {1925-1926},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/PMF_1925-1926_34_1_a7/}
}