| article html file updated | 8 February 2020 14:44 CET | Update | https://www.mdpi.com/2072-6694/9/9/111 |
| article html file updated | 3 May 2019 04:41 CEST | Update | N/A |
| article html file updated | 30 September 2017 10:15 CEST | Update | N/A |
| article html file updated | 8 September 2017 08:21 CEST | Update | N/A |
| article xml uploaded. | 8 September 2017 08:20 CEST | Update | https://www.mdpi.com/2072-6694/9/9/111/xml |
| article pdf uploaded. | 8 September 2017 08:20 CEST | Updated version of record | https://www.mdpi.com/2072-6694/9/9/111/pdf |
| article html file updated | 29 August 2017 08:38 CEST | Original file | N/A |
| article xml uploaded. | 29 August 2017 08:37 CEST | Original file | N/A |
| article pdf uploaded. | 29 August 2017 08:37 CEST | Version of Record | https://www.mdpi.com/2072-6694/9/9/111/pdf-vor |
