Submitted on: 06 October 2018.
Revised on: 18 January 2019.
Accepted on: 12 March 2019.
___________________AUTOMATICA---PERGAMON-ELSEVIER SCIENCE LTD
Submitted on: 15 December 2009.
Revised on: 21 March 2010.
Accepted on: 29 April 2010.
___________________AUTOMATICA---PERGAMON-ELSEVIER SCIENCE LTD
Submitted on: 14 October 2001.
Revised on: 28 December 2001.
Accepted on: 10 February 2002.
___________________AUTOMATICA---PERGAMON-ELSEVIER SCIENCE LTD
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