@article{JSFU_2024_17_2_a2,
     author = {Evgeny D. Leinartas and Evgeny K. Leinartas},
     title = {Difference equations and {Hadamard} composition of multiple power series},
     journal = {\v{Z}urnal Sibirskogo federalʹnogo universiteta. Matematika i fizika},
     pages = {169--174},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {2024},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JSFU_2024_17_2_a2/}
}