@article{MT_2022_25_1_a5, author = {A. V. Nechesov}, title = {Some questions on polynomially computable representations for generating grammars and {Backus-Naur} forms}, journal = {Matemati\v{c}eskie trudy}, pages = {134--151}, publisher = {mathdoc}, volume = {25}, number = {1}, year = {2022}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MT_2022_25_1_a5/} }