@article{10_14708_cm_v28i1_6220,
     author = {H. Hedenmalm},
     title = {Superalgebras and closed ideals},
     journal = {Commentationes Mathematicae},
     pages = { 69--75},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {1988},
     doi = {10.14708/cm.v28i1.6220},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v28i1.6220/}
}