@Article checklist 2: Corrected spelling of address 1)

@Q1: We confirm that the author names are in the proper order and spelled correctly.

@Q2: Correct.

@Q3: We confirm that References 1 and 21 are duplicates. We have deleted reference 21 and updated the enumeration of all citations in the text as requested. 

@Q4: We have updated Ref. 23. (now Ref. 22 after renumbering of references) with the publisher's name "World Scientific".

Summary of Annotations (page numbers indicated in square brackets)

Note [1]: The correct spelling is "Centre".

Note [3]: Replace Ref. "21" with Ref. "1".

Note [4]: Replace Ref. "22" with Ref. "21".

Note [4]: Replace Ref. "23" with Ref. "22".

Note [5]: Replace Ref. "24" with Ref. "23".

Note [6]: Remove Ref. "21" and renumber "22", "23" and "24" respectively to "21", "22" and "23".

Note [6]: Insert publisher name "World Scientific".

Thank you.