@article{PDM_2023_1_a0,
     author = {V. G. Durnev and A. I. Zetkina},
     title = {On equations in free monoids and semigroups with~restrictions on solutions},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {5--19},
     publisher = {mathdoc},
     number = {1},
     year = {2023},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2023_1_a0/}
}