@article{ZNSL_2019_482_a4,
     author = {A. E. Guterman and D. K. Kudryavtsev and O. V. Markova},
     title = {Length of a direct sum of nonassociative algebras},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {73--86},
     publisher = {mathdoc},
     volume = {482},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2019_482_a4/}
}