| article html file updated | 7 February 2020 22:31 CET | Update | https://www.mdpi.com/1424-8220/17/2/277 |
| article html file updated | 23 September 2019 03:06 CEST | Update | N/A |
| article html file updated | 4 May 2019 13:00 CEST | Update | N/A |
| article html file updated | 2 March 2017 11:15 CET | Update | N/A |
| article html file updated | 9 February 2017 12:24 CET | Original file | N/A |
| article xml uploaded. | 9 February 2017 12:23 CET | Original file | https://www.mdpi.com/1424-8220/17/2/277/xml |
| article pdf uploaded. | 9 February 2017 12:23 CET | Updated version of record | https://www.mdpi.com/1424-8220/17/2/277/pdf |
| article pdf uploaded. | 31 January 2017 10:27 CET | Version of Record | https://www.mdpi.com/1424-8220/17/2/277/pdf-vor |
