@article{ZAA_1999__18_4_48515,
     author = {Szuka{\l}a, A.},
     title = {A {Kneser-type} theorem for the equation  in locally convex spaces.},
     journal = {Zeitschrift f\"ur Analysis und ihre Anwendungen},
     pages = {1101--1106},
     publisher = {mathdoc},
     volume = {18},
     number = {4},
     year = {1999},
     zbl = {0944.34054},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZAA_1999__18_4_48515/}
}