@article{10_4064_sm_37_2_181_190,
     author = {W. \.Zelazko},
     title = {On permanently singular elements in commutative m-convex locally convex algebras},
     journal = {Studia Mathematica},
     pages = {181--190},
     year = {1970},
     volume = {37},
     number = {2},
     doi = {10.4064/sm-37-2-181-190},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-37-2-181-190/}
}