Article History
Received: 3 July 2020
Accepted: 2 December 2020
First Online: 3 January 2021
Change Date: 19 February 2021
Change Type: Update
Change Details: The affilaition 1 was incorrect. The correct affiliation is “Department of Pure Mathematics, Sarab Branch, Islamic Azad University Sarab, Sarab, Iran”
Compliance with ethical standards
:
: Sajjad Pahlavany declares that he has no conflict of interest. Jalal Hassanzadeh Asl declares that he has no conflict of interest. Shahram Razapour declares that he has no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.