@article{ADM_2010_10_1_a5,
     author = {Mykola Komarnitskiy and Roman Oliynyk},
     title = {Preradical and kernel functors over categories of $S$-acts},
     journal = {Algebra and discrete mathematics},
     pages = {57--66},
     publisher = {mathdoc},
     volume = {10},
     number = {1},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2010_10_1_a5/}
}