@article{UMJ_2019_5_1_a4,
     author = {Peter V. Danchev},
     title = {Commutative weakly invo-clean group rings},
     journal = {Ural mathematical journal},
     pages = {48--52},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UMJ_2019_5_1_a4/}
}