@article{TRSPY_2003_242_a9,
     author = {R. \`E. Yavorskii},
     title = {On {Prenex} {Fragment} of {Provability} {Logic} with {Quantifiers} on {Proofs}},
     journal = {Informatics and Automation},
     pages = {123--135},
     publisher = {mathdoc},
     volume = {242},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2003_242_a9/}
}