@article{ZNSL_1972_32_a13,
     author = {V. P. Orevkov},
     title = {A~specialization of {Gentzen-type} deductions and its application},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {98--104},
     publisher = {mathdoc},
     volume = {32},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1972_32_a13/}
}