@article{CMUC_1976__17_4_a7,
     author = {Be\v{c}v\'a\v{r}, Jind\v{r}ich},
     title = {$K$-essential subgroups of abelian groups. {II.}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {693--707},
     publisher = {mathdoc},
     volume = {17},
     number = {4},
     year = {1976},
     mrnumber = {0439952},
     zbl = {0353.20042},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1976__17_4_a7/}
}