@article{SJIM_2021_24_3_a6,
     author = {S. A. Sivak and M. E. Royak and I. M. Stupakov},
     title = {On the application of the fast multipole method to the optimization of the boundary element method for the {Helmholtz} equation},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {83--100},
     publisher = {mathdoc},
     volume = {24},
     number = {3},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_2021_24_3_a6/}
}