@article{KYB_2007__43_2_a1,
     author = {Drewniak, J\'ozef and Dudziak, Urszula},
     title = {Preservation of properties of fuzzy relations during aggregation processes},
     journal = {Kybernetika},
     pages = {115--132},
     publisher = {mathdoc},
     volume = {43},
     number = {2},
     year = {2007},
     mrnumber = {2343390},
     zbl = {1135.68050},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_2007__43_2_a1/}
}