Submitted on: 29 April 2015.
Revised on: 18 July 2015.
Accepted on: 14 September 2015.
___________________COMPUTING---SPRINGER WIEN
Submitted on: 04 September 2002.
Revised on: 27 November 2002.
Accepted on: 18 January 2003.
___________________COMPUTING---SPRINGER WIEN
Submitted on: 19 February 2001.
Revised on: 17 June 2001.
Accepted on: 01 July 2001.
___________________COMPUTING---SPRINGER WIEN
Submitted on: 22 August 2009.
Revised on: 05 November 2009.
Accepted on: 22 December 2009.
___________________COMPUTING---SPRINGER WIEN
http://reply.papertrans.cn/1/64/6317/6317-25.png
Submitted on: 07 August 2019.
Revised on: 31 August 2019.
Accepted on: 05 October 2019.
___________________COMPUTING---SPRINGER WIEN
http://reply.papertrans.cn/1/64/6317/6317-27.png
Submitted on: 04 December 2013.
Revised on: 05 January 2014.
Accepted on: 23 January 2014.
___________________COMPUTING---SPRINGER WIEN
http://reply.papertrans.cn/1/64/6317/6317-29.png
Submitted on: 22 November 1999.
Revised on: 05 February 2000.
Accepted on: 26 March 2000.
___________________COMPUTING---SPRINGER WIEN