@article{FPM_2008_14_7_a2,
     author = {I. N. Balaba and A. V. Mikhalev},
     title = {Anti-isomorphisms of graded endomorphism rings of graded modules close to free ones},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {23--36},
     publisher = {mathdoc},
     volume = {14},
     number = {7},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2008_14_7_a2/}
}