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http://reply.papertrans.cn/3/215/21472/21472-22.png
Submitted on: 10 July 2007.
Revised on: 22 August 2007.
Accepted on: 05 September 2007.
Mathematical Reports
Submitted on: 22 October 2023.
Revised on: 04 November 2023.
Accepted on: 13 November 2023.
Mathematical Reports---EDITURA ACAD ROMANE
Submitted on: 29 September 2000.
Revised on: 19 October 2000.
Accepted on: 15 November 2000.
Mathematical Reports
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http://reply.papertrans.cn/3/215/21472/21472-27.png
Submitted on: 28 November 2023.
Revised on: 10 December 2023.
Accepted on: 04 January 2024.
Mathematical Reports
http://reply.papertrans.cn/3/215/21472/21472-29.png
Submitted on: 19 April 2014.
Revised on: 18 May 2014.
Accepted on: 12 June 2014.
Mathematical Reports---EDITURA ACAD ROMANE