Submitted on: 20 September 2016.
Revised on: 10 January 2017.
Accepted on: 27 February 2017.
___________________ADVANCED NONLINEAR STUDIES---DE GRUYTER POLAND SP Z O O
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Submitted on: 12 July 2002.
Revised on: 25 October 2002.
Accepted on: 15 November 2002.
___________________ADVANCED NONLINEAR STUDIES---DE GRUYTER POLAND SP Z O O
Submitted on: 11 March 2012.
Revised on: 01 April 2012.
Accepted on: 14 April 2012.
___________________ADVANCED NONLINEAR STUDIES---DE GRUYTER POLAND SP Z O O
Submitted on: 31 May 1998.
Revised on: 03 July 1998.
Accepted on: 16 August 1998.
___________________ADVANCED NONLINEAR STUDIES---DE GRUYTER POLAND SP Z O O
Submitted on: 25 March 2019.
Revised on: 08 June 2019.
Accepted on: 05 July 2019.
___________________ADVANCED NONLINEAR STUDIES---DE GRUYTER POLAND SP Z O O