@article{10_4064_cm_7_2_177_179,
     author = {M. Knaser and S. \'Swierczkowski},
     title = {Embeddings in groups of countable permutations},
     journal = {Colloquium Mathematicum},
     pages = {177--179},
     publisher = {mathdoc},
     volume = {7},
     number = {2},
     year = {1959},
     doi = {10.4064/cm-7-2-177-179},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-7-2-177-179/}
}