@article{SJVM_2020_23_1_a6,
     author = {V. I. Paasonen},
     title = {Classification of difference schemes of the maximum possible accuracy on extended symmetric stencils for the {Schr\"odinger} equation and the heat transfer equation},
     journal = {Sibirskij \v{z}urnal vy\v{c}islitelʹnoj matematiki},
     pages = {99--114},
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJVM_2020_23_1_a6/}
}