| article html file updated | 14 November 2017 12:01 CET | Original file | https://www.mdpi.com/2409-515X/3/4/30 |
| article xml uploaded. | 14 November 2017 11:59 CET | Original file | https://www.mdpi.com/2409-515X/3/4/30/xml |
| article pdf uploaded. | 14 November 2017 11:59 CET | Version of Record | https://www.mdpi.com/2409-515X/3/4/30/pdf |
