@article{10_21136_CMJ_1963_100550,
     author = {\v{S}ik, Franti\v{s}ek},
     title = {\"Uber {Fortsetzung} additiver und isotoner {Funktionale} auf geordneten {Gruppen}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {24--36},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {1963},
     doi = {10.21136/CMJ.1963.100550},
     mrnumber = {0156903},
     zbl = {0116.26101},
     language = {ge},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1963.100550/}
}