| article html file updated | 14 February 2020 01:36 CET | Update | https://www.mdpi.com/2227-7102/9/4/256 |
| article html file updated | 17 October 2019 09:00 CEST | Original file | - |
| article pdf uploaded. | 17 October 2019 08:58 CEST | Version of Record | https://www.mdpi.com/2227-7102/9/4/256/pdf |
| article xml uploaded. | 17 October 2019 08:58 CEST | Update | https://www.mdpi.com/2227-7102/9/4/256/xml |
| article xml file uploaded | 17 October 2019 08:58 CEST | Original file | - |
