@article{MAN_1970__189_162082,
     author = {W.E.jr. DIETRICH},
     title = {The {Gelfand} {Degree} of a {Topological} {Algebra.}},
     journal = {Mathematische Annalen},
     pages = {285--298},
     publisher = {mathdoc},
     volume = {189},
     year = {1970},
     zbl = {0194.15501},
     url = {http://geodesic.mathdoc.fr/item/MAN_1970__189_162082/}
}