| article html file updated | 9 February 2020 01:20 CET | Update | https://www.mdpi.com/1424-8220/18/1/57 |
| article html file updated | 29 September 2019 12:33 CEST | Update | - |
| article html file updated | 2 May 2019 05:49 CEST | Update | - |
| article html file updated | 18 April 2019 03:49 CEST | Update | - |
| article html file updated | 28 March 2019 11:32 CET | Update | - |
| article html file updated | 2 February 2018 10:25 CET | Update | - |
| article html file updated | 27 December 2017 12:27 CET | Original file | - |
| article xml uploaded. | 27 December 2017 12:26 CET | Update | https://www.mdpi.com/1424-8220/18/1/57/xml |
| article xml uploaded. | 27 December 2017 12:26 CET | Original file | - |
| article pdf uploaded. | 27 December 2017 12:26 CET | Version of Record | https://www.mdpi.com/1424-8220/18/1/57/pdf |
