@article{PDMA_2022_15_a19,
     author = {O. I. Egorushkin and I. V. Kolbasina and K. V. Safonov},
     title = {Polynomial grammars generating an infinite set of languages},
     journal = {Prikladnaya Diskretnaya Matematika. Supplement},
     pages = {78--80},
     publisher = {mathdoc},
     number = {15},
     year = {2022},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDMA_2022_15_a19/}
}