@article{FPM_2013_18_3_a0,
     author = {T. V. Apraksina and I. Barkov and I. B. Kozhukhov},
     title = {Two examples of diagonal bi-acts},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {3--9},
     publisher = {mathdoc},
     volume = {18},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2013_18_3_a0/}
}