Source Data Reference for:

City = Kaifeng
Time = 1000

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Kaifeng	900	55,000	"btw 50,000 & 60,000"		Tertius Chandler	Four thousand years of urban growth	p468
Kaifeng	900	100,000			George Modelski	World Cities -3000 to 2000	p44
Kaifeng	900	60,000	"close to 60,000"		Tertius Chandler	Four thousand years of urban growth	p537
Kaifeng	920	100,000	passed for the 1st time		Tertius Chandler	Four thousand years of urban growth	p541
Kaifeng	925	100,000			Tertius Chandler	Four thousand years of urban growth	p533
Kaifeng	1000	400,000			Tertius Chandler	Four thousand years of urban growth	p528
Kaifeng	1000	400,000			Tertius Chandler	Four thousand years of urban growth	p531
Kaifeng	1000	400,000			George Modelski	World Cities -3000 to 2000	p44
Kaifeng	1000	400,000			Tertius Chandler	Four thousand years of urban growth	p469
Kaifeng	1000	400,000			Tertius Chandler	Four thousand years of urban growth	p522
Kaifeng	1000	400,000			Tertius Chandler	Four thousand years of urban growth	p71
Kaifeng	1013		becomes largest in the world overtaking Cordoba (E)		Tertius Chandler	Four thousand years of urban growth	p527