For citations:
Polubelova M.I., Bozhko S.N., Grigorev S.V. Certified Grammar Transformation to Chomsky Normal Form in F. Proceedings of the Institute for System Programming of the RAS (Proceedings of ISP RAS). 2016;28(2):127-138. https://doi.org/10.15514/ISPRAS-2016-28(2)-8