@article{PMF_1910_21_1_a5,
     author = {Stamm, E.},
     title = {Zur {Theorie} der {Beziehungen} {Operationen.}},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {42--54},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {1910},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/PMF_1910_21_1_a5/}
}