- en.wikipedia.org Eastern Orthodox Church2.9 Russian Orthodox Church in the Russian Empire. 2.10 Eastern Orthodox churches under Communist rule. 2.11 Post-Communism to 21st century.
- christianity.com church/denominations/the-…Following the 1054 Great Schism, both the Western Church and Eastern Church continued to consider themselves uniquely orthodox and catholic .
- rbth.com lifestyle/331524-orthodox-christianity-…The Ecumenical Patriarch of the Church of Constantinople is considered “first among equals” in Orthodox Christianity.
- Kiev court orders representatives of the Ukrainian Orthodox Church (UOC) to vacate the Eletsky Monastery in Chernigov.
- dw.com en/what-is-the-orthodox-church/a-45973747The Orthodox Catholic Church is commonly known as the Eastern Orthodox Church, partly to avoid confusion with the Roman Catholic Church.
- youtube.com channel/UCvV_LZGJbXjSN2Jx31YYF1QAnd i believe in One Holy Catholic and Apostolic Church.Amen.Truly, there is only one Church in this world and there is only one true apostolic faith, the fa...
- ansiklopedi.tubitak.gov.tr ansiklopedi/ortodoks_…Cambridge: Cambridge University Press, 1979. Ware, Timothy. The Orthodox Church An Introduction to Eastern Christianity. New York: Penguin, 2015.
- slife.org eastern-orthodox-church/The Eastern Orthodox Church, also called the Orthodox Church, is the second-largest Christian church, with approximately 260 million baptized members.
- holytrinityorthodox.com htc/orthodox-calendar/Orthodox Calendar. April 24 – Great and Holy Pascha. Troparia/Kontakia.
- http://orthodoxinfo.com general/orthodoxy.aspxToday Orthodox Church numbers approximately 300 million Christians who follow the faith and practices that were defined by the first seven ecumenical councils.