@article{FPM_2004_10_1_a4,
     author = {O. V. Efimovskaya and V. V. Sokolov},
     title = {Decompositions of the loop algebra over $\mathrm{so}(4)$ and integrable models of the chiral equation type},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {39--47},
     publisher = {mathdoc},
     volume = {10},
     number = {1},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2004_10_1_a4/}
}