| article html file updated | 9 February 2020 07:01 CET | Update | https://www.mdpi.com/1424-8220/18/2/621 |
| article html file updated | 30 September 2019 21:37 CEST | Update | - |
| article html file updated | 1 May 2019 17:36 CEST | Update | - |
| article html file updated | 17 April 2019 16:57 CEST | Update | - |
| article html file updated | 29 March 2019 00:09 CET | Update | - |
| article html file updated | 14 March 2018 20:02 CET | Update | - |
| article html file updated | 24 February 2018 02:58 CET | Original file | - |
| article xml uploaded. | 24 February 2018 02:57 CET | Update | https://www.mdpi.com/1424-8220/18/2/621/xml |
| article xml uploaded. | 24 February 2018 02:57 CET | Update | - |
| article xml uploaded. | 24 February 2018 02:57 CET | Original file | - |
| article pdf uploaded. | 24 February 2018 02:57 CET | Updated version of record | https://www.mdpi.com/1424-8220/18/2/621/pdf |
| article pdf uploaded. | 18 February 2018 11:21 CET | Version of Record | https://www.mdpi.com/1424-8220/18/2/621/pdf-vor |
