Encyclopedia of the Ottoman Empire Nomads and Ottomans in Medieval Anatolia
Southeastern Europe under Ottoman rule, 1354-1804, By Peter F : Katasterhefte Bursas , S

This set off the chain of events that would ultimately lead to the founding of the Ottoman Empire.

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قبيلة قايي — الفنون والثقافة من Google
Between Two Worlds: The Construction of the Ottoman State
أرطغرل
Nomads and Ottomans in Medieval Anatolia
اثار
Ali Anooshahr, The Ghazi Sultans and the Frontiers of Islam, pg
Reliable information regarding Osman is scarce The problem of Ottoman origins has preoccupied students of history, but because of both the absence of contemporary source materials and conflicting accounts written subsequent to the events there seems to be no basis for a definitive statement
The problem of Ottoman origins has preoccupied students of history, but because of both the absence of contemporary source materials and conflicting accounts written subsequent to the events there seems to be no basis for a definitive statement New York: Facts on File

: Katasterhefte Bursas , S.

اثار
Berkeley: University of California Press
قبيلة قايي
History of the Ottoman Empire and Modern Turkey
أرطغرل
Between Two Worlds: The Construction of the Ottoman State