@article{ADM_2016_21_1_a4,
     author = {Dariusz Dudzik and Marcin Skrzy\'nski},
     title = {An outer measure on a commutative ring},
     journal = {Algebra and discrete mathematics},
     pages = {51--58},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2016_21_1_a4/}
}