| article html file updated | 9 February 2020 01:17 CET | Update | https://www.mdpi.com/1424-8220/18/1/51 |
| article html file updated | 29 September 2019 12:10 CEST | Update | - |
| article html file updated | 2 May 2019 05:57 CEST | Update | - |
| article html file updated | 18 April 2019 03:56 CEST | Update | - |
| article html file updated | 28 March 2019 11:23 CET | Update | - |
| article html file updated | 2 February 2018 10:23 CET | Update | - |
| article html file updated | 27 December 2017 10:20 CET | Original file | - |
| article xml uploaded. | 27 December 2017 10:19 CET | Update | https://www.mdpi.com/1424-8220/18/1/51/xml |
| article xml uploaded. | 27 December 2017 10:19 CET | Original file | - |
| article pdf uploaded. | 27 December 2017 10:19 CET | Updated version of record | https://www.mdpi.com/1424-8220/18/1/51/pdf |
| article pdf uploaded. | 26 December 2017 16:23 CET | Version of Record | https://www.mdpi.com/1424-8220/18/1/51/pdf-vor |
