@article{AFM_1969_421-450_a19,
     author = {Yrj\"o Kilpi},
     title = {\"Uber lineare {R\"aume} mit der {Norm} zweiter oder dritter {Art}},
     journal = {Annales Fennici Mathematici},
     publisher = {mathdoc},
     volume = {421-450},
     year = {1969},
     doi = {10.5186/aasfm.1969.431},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1969.431/}
}