Kratkīĭ ocherk istorīi Ėstli︠a︡ndīi; k 200-li︠e︡tnemu i︠u︡bilei︠u︡ zavoevanīi︠a︡ ei︠a︡ Rossīei︠u︡, 1710-1910.

Mode of access: Internet.

Li︠e︡topisʹ sobytīĭ v I︠U︡gozapadnoĭ Rossīi v XVII-m vi︠e︡ke /

"Izdana Vremennoi︠u︡ komissīi︠e︡i︠u︡ dli︠a︡ razbora drevnikh aktov."