Linked from
The 10 pages that link to Zemsky Sobor, each with the reason it gives.
Boris GodunovRelated: An assembly elected Godunov tsar after Feodor I died without an heir.
Michael of RussiaRelated: The assembly elected Michael to the throne in 1613.
Feodor I of RussiaRelated: A Zemsky Sobor elected Godunov after Feodor left no direct heir.
House of RomanovRelated: Its 1613 assembly chose Michael Romanov as tsar.