Submitted on: 04 April 2013.
Revised on: 05 May 2013.
Accepted on: 19 May 2013.
___________________EUROPEAN JOURNAL OF COMBINATORICS
Submitted on: 03 February 2018.
Revised on: 17 May 2018.
Accepted on: 23 June 2018.
___________________EUROPEAN JOURNAL OF COMBINATORICS
Submitted on: 13 July 2006.
Revised on: 07 October 2006.
Accepted on: 29 November 2006.
___________________EUROPEAN JOURNAL OF COMBINATORICS
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Submitted on: 29 July 2017.
Revised on: 02 October 2017.
Accepted on: 29 November 2017.
___________________EUROPEAN JOURNAL OF COMBINATORICS
Submitted on: 19 July 2017.
Revised on: 28 August 2017.
Accepted on: 15 October 2017.
___________________EUROPEAN JOURNAL OF COMBINATORICS
Submitted on: 22 December 2019.
Revised on: 06 March 2020.
Accepted on: 19 April 2020.
___________________EUROPEAN JOURNAL OF COMBINATORICS
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Submitted on: 16 December 2021.
Revised on: 15 March 2022.
Accepted on: 27 April 2022.
___________________EUROPEAN JOURNAL OF COMBINATORICS