@article{PIM_1934_Tom_III_a1,
     author = {Hermann Wendelin},
     title = {Uber lineare {Operatoren} mit besonderer {Berucksichtigung} der {Fragen} uber {Nichtvertauschbarkeit}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {13 },
     publisher = {mathdoc},
     volume = {Tom_III},
     year = {1934},
     url = {http://geodesic.mathdoc.fr/item/PIM_1934_Tom_III_a1/}
}