@article{10_4064_sm_24_3_257_270,
     author = {D. Przeworska-Rolewicz and S. Rolewicz},
     title = {On operators with a finite d-characteristic},
     journal = {Studia Mathematica},
     pages = {257--270},
     publisher = {mathdoc},
     volume = {24},
     number = {3},
     year = {1964},
     doi = {10.4064/sm-24-3-257-270},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-24-3-257-270/}
}