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The electronic purse

 

作者: Peter (F)Harrop,  

 

期刊: IEE Review  （IET Available online 1992）
卷期: Volume 38, issue 6  

页码: 227-231

 

ISSN:0953-5683

 

年代: 1992

 

DOI:10.1049/ir:19920092

 

出版商: IEE

 

数据来源: IET

 

摘要:

In 1991, the world used over one billion prepayment cards in transactions worth over $4 billion, a figure that may increase five-fold before the end of the decade

 

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