Petr Borislavich : poisk avtora "Slova o polku Igoreve" /
Rybakov, Boris Aleksandrovich,1908-
Moskva : "Molodai︠a︡ gvardii︠a︡",
1991.
Includes bibliographical references (p. 286-[287]).
Petr Borislavich, approximately 1120-approximately 1196.
Slovo o polku Igoreve