@article{IM2_2023_87_4_a4,
     author = {V. A. Roman'kov},
     title = {Undecidability of the submonoid membership problem for free nilpotent group of class $l\geqslant 2$ of sufficiently large rank},
     journal = {Izvestiya. Mathematics },
     pages = {798--816},
     publisher = {mathdoc},
     volume = {87},
     number = {4},
     year = {2023},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2023_87_4_a4/}
}