Journal History

1. Starting from vol 20 No 1 February 2018 there has been a change in the template from 2 columns to 1 column

2. from the vol 21 no 1 February 2019 edition there has been a change in the editor in chief

3. editions of vol 19 no 2 August 2019 there are changes to the editorial board

4. crossref and dimensions indexation links have errors