%0 Journal Article %A Parascovia Syrbu %A Ion Grecu %T Loops with invariant flexibility under the isostrophy %J Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica %D 2020 %P 122-128 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/BASM_2020_1_a7/ %G en %F BASM_2020_1_a7