| article html file updated | 9 February 2020 01:59 CET | Update | https://www.mdpi.com/1424-8220/18/1/121 |
| article html file updated | 29 September 2019 16:11 CEST | Update | - |
| article html file updated | 2 May 2019 04:27 CEST | Update | - |
| article html file updated | 18 April 2019 02:32 CEST | Update | - |
| article html file updated | 28 March 2019 13:04 CET | Update | - |
| article html file updated | 2 February 2018 10:39 CET | Update | - |
| article html file updated | 4 January 2018 14:00 CET | Original file | - |
| article xml uploaded. | 4 January 2018 13:58 CET | Original file | https://www.mdpi.com/1424-8220/18/1/121/xml |
| article pdf uploaded. | 4 January 2018 13:58 CET | Version of Record | https://www.mdpi.com/1424-8220/18/1/121/pdf |
