@article{ADM_2017_24_1_a6,
     author = {E. Chapovsky and O. Shevchyk},
     title = {On divergence and sums of derivations},
     journal = {Algebra and discrete mathematics},
     pages = {99--105},
     publisher = {mathdoc},
     volume = {24},
     number = {1},
     year = {2017},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/ADM_2017_24_1_a6/}
}