@article{10_21136_MB_2011_141445,
     author = {Chajda, Ivan and Kola\v{r}{\'\i}k, Miroslav and \v{S}vr\v{c}ek, Filip},
     title = {Properties of relatively pseudocomplemented directoids},
     journal = {Mathematica Bohemica},
     pages = {9--23},
     publisher = {mathdoc},
     volume = {136},
     number = {1},
     year = {2011},
     doi = {10.21136/MB.2011.141445},
     mrnumber = {2807704},
     zbl = {1224.06006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.2011.141445/}
}