@article{ADM_2008_3_a1,
     author = {Natalia Burban and Omelyan Horbachuk},
     title = {Radical functors in the category of modules over different rings},
     journal = {Algebra and discrete mathematics},
     pages = {30--39},
     publisher = {mathdoc},
     number = {3},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2008_3_a1/}
}