@article{ZNSL_2020_497_a5,
     author = {V. P. Orevkov},
     title = {Upper and lower bounds on the height of proofs in sequent calculus for intuitionistic logic},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {124--169},
     publisher = {mathdoc},
     volume = {497},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2020_497_a5/}
}