| article html file updated | 12 February 2020 09:44 CET | Update | https://www.mdpi.com/2227-7102/9/2/97 |
| article html file updated | 4 July 2019 17:57 CEST | Update | N/A |
| article html file updated | 29 May 2019 09:45 CEST | Original file | N/A |
| article pdf uploaded. | 29 May 2019 09:44 CEST | Updated version of record | https://www.mdpi.com/2227-7102/9/2/97/pdf |
| article xml uploaded. | 29 May 2019 09:44 CEST | Update | https://www.mdpi.com/2227-7102/9/2/97/xml |
| article xml file uploaded | 29 May 2019 09:44 CEST | Update | N/A |
| article pdf uploaded. | 3 May 2019 15:52 CEST | Version of Record | https://www.mdpi.com/2227-7102/9/2/97/pdf-vor |
| article xml file uploaded | 3 May 2019 15:52 CEST | Original file | N/A |
