Submitted on: 26 January 2020.
Revised on: 04 April 2020.
Accepted on: 23 May 2020.
___________________COMMUNICATIONS IN PARTIAL DIFFERENTIAL EQUATIONS
http://reply.papertrans.cn/1/61/6025/6025-32.png
Submitted on: 25 January 2005.
Revised on: 03 May 2005.
Accepted on: 13 May 2005.
___________________COMMUNICATIONS IN PARTIAL DIFFERENTIAL EQUATIONS
http://reply.papertrans.cn/1/61/6025/6025-34.png
http://reply.papertrans.cn/1/61/6025/6025-35.png
http://reply.papertrans.cn/1/61/6025/6025-36.png