@book{1987-borwein
,title={{Pi and the AGM}}
,booktitle={{Pi and the AGM}}
,author={Jonathan M. Borwein and Peter B. Borwein}
,ISBN={0--471--83138--7}
,MR={89a:11134}
,publisher={Wiley}
,address={New York}
,year={1987}
}