@article{VUU_2008_2_a1,
     author = {A. A. Aizikovich},
     title = {About disconjugate solutions of the difference system},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {7--8},
     publisher = {mathdoc},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2008_2_a1/}
}