%0 Journal Article %A Anatolii V. Zhuchok %A Yuliia V. Zhuchok %A Oksana O. Odintsova %T Free left $k$-nilpotent $n$-tuple semigroups %J Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica %D 2020 %P 29-38 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/BASM_2020_3_a2/ %G en %F BASM_2020_3_a2