@article{700900,
     title = {Gelfand-Naimark theorems for non-commutative topological rings},
     booktitle = {General Topology and its Relations to Modern Analysis and Algebra},
     series = {GDML\_Books},
     publisher = {Academia Publishing House of the Czechoslovak Academy of Sciences},
     address = {Praha},
     year = {1967},
     pages = {184-189},
     zbl = {0204.05402},
     url = {http://dml.mathdoc.fr/item/700900}
}

Hofmann, K. H. Gelfand-Naimark theorems for non-commutative topological rings, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books,  (1967), pp. 184-189. http://gdmltest.u-ga.fr/item/700900/