| article html file updated | 9 February 2020 00:15 CET | Update | https://www.mdpi.com/1424-8220/17/12/2921 |
| article html file updated | 29 September 2019 06:15 CEST | Update | N/A |
| article html file updated | 2 May 2019 08:12 CEST | Update | N/A |
| article html file updated | 18 April 2019 05:59 CEST | Update | N/A |
| article html file updated | 2 January 2018 10:59 CET | Update | N/A |
| article html file updated | 18 December 2017 06:57 CET | Update | N/A |
| article xml uploaded. | 18 December 2017 06:55 CET | Update | https://www.mdpi.com/1424-8220/17/12/2921/xml |
| article xml uploaded. | 18 December 2017 06:55 CET | Update | N/A |
| article xml uploaded. | 18 December 2017 06:55 CET | Update | N/A |
| article pdf uploaded. | 18 December 2017 06:55 CET | Updated version of record | https://www.mdpi.com/1424-8220/17/12/2921/pdf |
| article html file updated | 15 December 2017 16:20 CET | Original file | N/A |
| article xml uploaded. | 15 December 2017 16:19 CET | Update | N/A |
| article xml uploaded. | 15 December 2017 16:19 CET | Original file | N/A |
| article pdf uploaded. | 15 December 2017 16:19 CET | Version of Record | https://www.mdpi.com/1424-8220/17/12/2921/pdf-vor |
