http://reply.papertrans.cn/3/264/26365/26365-11.png
Submitted on: 31 July 2000.
Revised on: 11 August 2000.
Accepted on: 25 August 2000.
REQUIREMENTS ENGINEERING---SPRINGER
Submitted on: 07 November 2002.
Revised on: 21 December 2002.
Accepted on: 07 January 2003.
REQUIREMENTS ENGINEERING
http://reply.papertrans.cn/3/264/26365/26365-14.png
Submitted on: 18 October 2017.
Revised on: 12 November 2017.
Accepted on: 23 November 2017.
REQUIREMENTS ENGINEERING---SPRINGER
http://reply.papertrans.cn/3/264/26365/26365-16.png
http://reply.papertrans.cn/3/264/26365/26365-17.png
Submitted on: 19 December 2016.
Revised on: 08 January 2017.
Accepted on: 24 January 2017.
REQUIREMENTS ENGINEERING---SPRINGER
http://reply.papertrans.cn/3/264/26365/26365-19.png
http://reply.papertrans.cn/3/264/26365/26365-20.png