TY  - JOUR
AU  - A. V. Litavrin
TI  - Endomorphisms of some groupoids of order $k+k^2$
JO  - The Bulletin of Irkutsk State University. Series Mathematics
PY  - 2020
SP  - 64
EP  - 78
VL  - 32
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IIGUM_2020_32_a4/
LA  - en
ID  - IIGUM_2020_32_a4
ER  -