@article{RM_1990_45_1_a5,
     author = {V. V. Balashchenko and Yu. D. Churbanov},
     title = {Invariant structures on homogeneous $\Phi$-spaces of order~5},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {195--197},
     publisher = {mathdoc},
     volume = {45},
     number = {1},
     year = {1990},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1990_45_1_a5/}
}