Geodesic
Comparative descriptions for two methods: the classical radiation method and the method of equivalent systems
Sibirskij žurnal vyčislitelʹnoj matematiki, Tome 6 (2003) no. 3, pp. 279-290.

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In this paper, the author considers two alternative methods of solution of multi-dimensional second order partial differential equations. These methods are called: the classical radiation method and the method of equivalent systems (MES). It is shown that in a sense one can consider the MES as generalization and extension of the classical radiation method. As an example the author makes use of the three-dimensional wave equation. 
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É. V. Nikol'skii. Comparative descriptions for two methods: the classical radiation method and the method of equivalent systems. Sibirskij žurnal vyčislitelʹnoj matematiki, Tome 6 (2003) no. 3, pp. 279-290. http://geodesic.mathdoc.fr/item/SJVM_2003_6_3_a5/

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