@article{10_21136_CMJ_1957_100225,
     author = {H\'ajek, Otomar},
     title = {Direct decompositions of lattices, {I}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {1--15},
     year = {1957},
     volume = {7},
     number = {1},
     doi = {10.21136/CMJ.1957.100225},
     mrnumber = {0091265},
     zbl = {0090.02201},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1957.100225/}
}