| article html file updated | 8 February 2020 21:48 CET | Update | https://www.mdpi.com/2412-3811/2/4/21 |
| article html file updated | 28 September 2019 15:30 CEST | Update | N/A |
| article html file updated | 2 May 2019 13:37 CEST | Update | N/A |
| article html file updated | 18 April 2019 11:17 CEST | Update | N/A |
| article html file updated | 29 November 2017 23:20 CET | Update | N/A |
| article xml uploaded. | 29 November 2017 02:43 CET | Update | https://www.mdpi.com/2412-3811/2/4/21/xml |
| article xml uploaded. | 29 November 2017 02:43 CET | Update | N/A |
| article pdf uploaded. | 29 November 2017 02:43 CET | Updated version of record | https://www.mdpi.com/2412-3811/2/4/21/pdf |
| article html file updated | 23 November 2017 08:10 CET | Update | N/A |
| article xml uploaded. | 23 November 2017 08:09 CET | Update | N/A |
| article xml uploaded. | 23 November 2017 08:09 CET | Update | N/A |
| article xml uploaded. | 23 November 2017 08:09 CET | Update | N/A |
| article pdf uploaded. | 23 November 2017 08:09 CET | Updated version of record | https://www.mdpi.com/2412-3811/2/4/21/pdf-vor |
| article html file updated | 21 November 2017 14:59 CET | Original file | N/A |
| article xml uploaded. | 21 November 2017 14:58 CET | Update | N/A |
| article xml uploaded. | 21 November 2017 14:58 CET | Update | N/A |
| article pdf uploaded. | 21 November 2017 14:58 CET | Version of Record | https://www.mdpi.com/2412-3811/2/4/21/pdf-vor |
| article xml uploaded. | 21 November 2017 14:58 CET | Original file | N/A |
