- The submission has not been previously published, nor is it before another journal for consideration (or an explanation has been provided in Comments to the Editor).
- The submission file must be in MS WORD file format.
- Where available, URLs for the references have been provided.
- Please refer to Instructions for Authors page for detailed guidlines.
All the articles published in this issue are licensed under the terms of the Creative Commons Attribution Non-Commercial License (CC Attribution 4.0 License. (http://creativecommons.org/licenses/by-nc/4.0/)) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.