@article{MZM_2003_74_3_a4,
     author = {D. F. Goguadze},
     title = {About the {Notion} of {Semiring} of {Sets}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {362--368},
     publisher = {mathdoc},
     volume = {74},
     number = {3},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2003_74_3_a4/}
}