| article html file updated | 8 February 2020 14:43 CET | Update | https://www.mdpi.com/2227-9067/4/9/80 |
| article html file updated | 26 September 2019 19:31 CEST | Update | N/A |
| article html file updated | 3 May 2019 04:42 CEST | Update | N/A |
| article html file updated | 30 September 2017 10:18 CEST | Update | N/A |
| article html file updated | 29 August 2017 12:29 CEST | Original file | N/A |
| article xml uploaded. | 29 August 2017 12:28 CEST | Original file | https://www.mdpi.com/2227-9067/4/9/80/xml |
| article pdf uploaded. | 29 August 2017 12:28 CEST | Updated version of record | https://www.mdpi.com/2227-9067/4/9/80/pdf |
| article pdf uploaded. | 28 August 2017 16:07 CEST | Version of Record | https://www.mdpi.com/2227-9067/4/9/80/pdf-vor |
