| article html file updated | 8 February 2020 08:35 CET | Update | https://www.mdpi.com/1424-8220/17/6/1420 |
| article html file updated | 25 September 2019 10:01 CEST | Update | N/A |
| article html file updated | 3 May 2019 16:53 CEST | Update | N/A |
| article html file updated | 30 June 2017 12:00 CEST | Update | N/A |
| article html file updated | 23 June 2017 03:58 CEST | Update | N/A |
| article xml uploaded. | 23 June 2017 03:56 CEST | Update | https://www.mdpi.com/1424-8220/17/6/1420/xml |
| article pdf uploaded. | 23 June 2017 03:56 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/6/1420/pdf |
| article html file updated | 20 June 2017 08:51 CEST | Original file | N/A |
| article pdf uploaded. | 20 June 2017 08:49 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/6/1420/pdf-vor |
| article pdf uploaded. | 17 June 2017 10:53 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/6/1420/pdf-vor |
