@article{AL_1992_31_4_a3,
     author = {A. T. Gainov},
     title = {Semi-orthogonal sum of monocomposition algebras with identity},
     journal = {Algebra i logika},
     pages = {391--406},
     publisher = {mathdoc},
     volume = {31},
     number = {4},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1992_31_4_a3/}
}