@article{10_21136_MB_2000_125950,
     author = {Chajda, Ivan},
     title = {A note on congruence kernels in ortholattices},
     journal = {Mathematica Bohemica},
     pages = {169--172},
     publisher = {mathdoc},
     volume = {125},
     number = {2},
     year = {2000},
     doi = {10.21136/MB.2000.125950},
     mrnumber = {1768805},
     zbl = {0966.06010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.2000.125950/}
}