@article{TIMM_2023_29_1_a10,
     author = {A. V. Litavrin},
     title = {On an {Element-by-Element} {Description} of the {Monoid} of all {Endomorphisms} of an {Arbitrary} {Groupoid} and {One} {Classification} of {Endomorphisms} of a {Groupoid}},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {143--159},
     year = {2023},
     volume = {29},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2023_29_1_a10/}
}