@article{KJM_2021_45_5_a0,
     author = {Elahe Mohammadzadeh and Rajab Ali Borzooei},
     title = {Results on {(Engel,} {Solvable,} {Nilpotent)} {Fuzzy} {Subpolygroups}},
     journal = {Kragujevac Journal of Mathematics},
     pages = {667 },
     publisher = {mathdoc},
     volume = {45},
     number = {5},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2021_45_5_a0/}
}