@article{10_21136_CMJ_1971_101048,
     author = {Schwarz, \v{S}tefan},
     title = {On the structure of dual semigroups},
     journal = {Czechoslovak Mathematical Journal},
     pages = {461--483},
     publisher = {mathdoc},
     volume = {21},
     number = {3},
     year = {1971},
     doi = {10.21136/CMJ.1971.101048},
     mrnumber = {0292982},
     zbl = {0232.20116},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1971.101048/}
}