| article html file updated | 9 February 2020 05:56 CET | Update | https://www.mdpi.com/1424-8220/18/2/508 |
| article html file updated | 30 September 2019 15:16 CEST | Update | - |
| article html file updated | 1 May 2019 20:00 CEST | Update | - |
| article html file updated | 17 April 2019 19:06 CEST | Update | - |
| article html file updated | 28 March 2019 21:51 CET | Update | - |
| article html file updated | 14 March 2018 19:27 CET | Update | - |
| article html file updated | 8 February 2018 10:14 CET | Original file | - |
| article xml uploaded. | 8 February 2018 10:13 CET | Original file | https://www.mdpi.com/1424-8220/18/2/508/xml |
| article pdf uploaded. | 8 February 2018 10:13 CET | Version of Record | https://www.mdpi.com/1424-8220/18/2/508/pdf |
