@article{10_21136_CMJ_1992_128374,
     author = {Pond\v{e}l{\'\i}\v{c}ek, Bed\v{r}ich},
     title = {Subalgebra modular, distributive and boolean varieties of semigroups},
     journal = {Czechoslovak Mathematical Journal},
     pages = {757--764},
     publisher = {mathdoc},
     volume = {42},
     number = {4},
     year = {1992},
     doi = {10.21136/CMJ.1992.128374},
     mrnumber = {1182205},
     zbl = {0784.20031},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1992.128374/}
}