@article{AUCMP_2012_53_1_a3,
     author = {Ka\v{s}par, Petr},
     title = {Averaging problem in general relativity and cosmology},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {43--50},
     year = {2012},
     volume = {53},
     number = {1},
     mrnumber = {3099400},
     zbl = {1267.83083},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUCMP_2012_53_1_a3/}
}