Submitted on: 04 December 2015.
Revised on: 07 March 2016.
Accepted on: 29 April 2016.
___________________Journal of Differential Equations
Submitted on: 21 September 2015.
Revised on: 24 October 2015.
Accepted on: 09 December 2015.
___________________Journal of Differential Equations
Submitted on: 17 October 2006.
Revised on: 31 January 2007.
Accepted on: 20 February 2007.
___________________Journal of Differential Equations
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Submitted on: 09 June 2023.
Revised on: 05 September 2023.
Accepted on: 20 October 2023.
___________________Journal of Differential Equations
Submitted on: 11 September 1998.
Revised on: 14 December 1998.
Accepted on: 29 January 1999.
___________________Journal of Differential Equations