@article{10_21136_CMJ_1993_128428,
     author = {Jakub{\'\i}kov\'a-Studenovsk\'a, Danica},
     title = {On directed convex subsets of partial monounary algebras},
     journal = {Czechoslovak Mathematical Journal},
     pages = {675--693},
     publisher = {mathdoc},
     volume = {43},
     number = {4},
     year = {1993},
     doi = {10.21136/CMJ.1993.128428},
     mrnumber = {1258429},
     zbl = {0798.08006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1993.128428/}
}