| article html file updated | 9 February 2020 05:06 CET | Update | https://www.mdpi.com/1424-8220/18/2/420 |
| article html file updated | 30 September 2019 10:03 CEST | Update | - |
| article html file updated | 1 May 2019 21:54 CEST | Update | - |
| article html file updated | 17 April 2019 20:42 CEST | Update | - |
| article html file updated | 28 March 2019 20:02 CET | Update | - |
| article html file updated | 14 March 2018 18:49 CET | Update | - |
| article html file updated | 1 February 2018 05:03 CET | Original file | - |
| article xml uploaded. | 1 February 2018 05:02 CET | Update | https://www.mdpi.com/1424-8220/18/2/420/xml |
| article xml uploaded. | 1 February 2018 05:02 CET | Original file | - |
| article pdf uploaded. | 1 February 2018 05:02 CET | Version of Record | https://www.mdpi.com/1424-8220/18/2/420/pdf |
