@article{10_21136_CMJ_1951_100012,
     author = {Rieger, Ladislav},
     title = {On countable generalised $\sigma$-algebras, with a new proof of {G\"odel's} completeness theorem},
     journal = {Czechoslovak Mathematical Journal},
     pages = {29--40},
     year = {1951},
     volume = {1},
     number = {1},
     doi = {10.21136/CMJ.1951.100012},
     mrnumber = {0050560},
     zbl = {0045.15002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1951.100012/}
}