http://reply.papertrans.cn/1/64/6324/6324-31.png
http://reply.papertrans.cn/1/64/6324/6324-32.png
Submitted on: 21 February 2018.
Revised on: 01 May 2018.
Accepted on: 24 June 2018.
___________________Comunicar---OXBRIDGE PUBLISHING HOUSE
http://reply.papertrans.cn/1/64/6324/6324-34.png
http://reply.papertrans.cn/1/64/6324/6324-35.png
Submitted on: 09 May 2020.
Revised on: 06 July 2020.
Accepted on: 17 August 2020.
___________________Comunicar---OXBRIDGE PUBLISHING HOUSE