@article{AL_2020_59_1_a6,
     author = {N. S. Romanovskii},
     title = {Metabelian pro-$p$-groups with a single relation},
     journal = {Algebra i logika},
     pages = {116--122},
     publisher = {mathdoc},
     volume = {59},
     number = {1},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2020_59_1_a6/}
}