Submitted on: 11 September 2021.
Revised on: 05 October 2021.
Accepted on: 25 October 2021.
REQUIREMENTS ENGINEERING
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http://reply.papertrans.cn/3/264/26365/26365-23.png
http://reply.papertrans.cn/3/264/26365/26365-24.png
Submitted on: 22 September 2016.
Revised on: 18 October 2016.
Accepted on: 14 November 2016.
REQUIREMENTS ENGINEERING---SPRINGER
http://reply.papertrans.cn/3/264/26365/26365-26.png
Submitted on: 20 March 2010.
Revised on: 25 April 2010.
Accepted on: 09 May 2010.
REQUIREMENTS ENGINEERING
http://reply.papertrans.cn/3/264/26365/26365-28.png
http://reply.papertrans.cn/3/264/26365/26365-29.png
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