@article{10_21136_MB_1994_126085,
     author = {Tkadlec, Josef},
     title = {Boolean orthoposets---concreteness and orthocompleteness},
     journal = {Mathematica Bohemica},
     pages = {123--128},
     publisher = {mathdoc},
     volume = {119},
     number = {2},
     year = {1994},
     doi = {10.21136/MB.1994.126085},
     mrnumber = {1293244},
     zbl = {0808.03047},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.1994.126085/}
}