@article{CC_2007_36_3_a25,
     author = {\.Zelazko, Wies{\l}aw},
     title = {Continuous characters and joint topological spectrum},
     journal = {Control and Cybernetics},
     pages = {859--864},
     year = {2007},
     volume = {36},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CC_2007_36_3_a25/}
}