@article{DE_1995_31_3_a14,
     author = {V. V. Kravchenko},
     title = {On the decomposition into a direct sum of the kernel of the {Laplace} operator by means of biquaternion zero divisors},
     journal = {Differencialʹnye uravneni\^a},
     pages = {498--501},
     publisher = {mathdoc},
     volume = {31},
     number = {3},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1995_31_3_a14/}
}