@article{10_14708_cm_v9i2_5553,
     author = {R. S. Ingarden},
     title = {Simplified axioms for information without probability},
     journal = {Commentationes Mathematicae},
     pages = { 273--282},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {1965},
     doi = {10.14708/cm.v9i2.5553},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v9i2.5553/}
}