@article{IIGUM_2021_35_a6,
     author = {A. A. Stepanova},
     title = {$S$-acts over a well-ordered monoid with modular congruence lattice},
     journal = {The Bulletin of Irkutsk State University. Series Mathematics},
     pages = {87--102},
     publisher = {mathdoc},
     volume = {35},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IIGUM_2021_35_a6/}
}