Source Data Reference for:

City = Xian
Time = 400

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Changan	300	50,000	"under 100,000"		George Modelski	World Cities -3000 to 2000	p44
Xian	300	140,000			Ian Morris	Social Development
Changan	361	78,000	half as large when not capital	not capital btw 352 and 370	Tertius Chandler	Four thousand years of urban growth	p102
Changan	361	80,000			Tertius Chandler	Four thousand years of urban growth	p532
Changan	361	80,000			Tertius Chandler	Four thousand years of urban growth	p464
Changan	383	162,000			Tertius Chandler	Four thousand years of urban growth	p102
Changan	387	150,000			Tertius Chandler	Four thousand years of urban growth	p102
Changan	400	100,000			George Modelski	World Cities -3000 to 2000	p44