| article html file updated | 8 February 2020 04:31 CET | Update | https://www.mdpi.com/1424-8220/17/5/971 |
| article html file updated | 24 September 2019 12:55 CEST | Update | - |
| article html file updated | 4 May 2019 00:31 CEST | Update | - |
| article html file updated | 2 June 2017 04:02 CEST | Update | - |
| article html file updated | 27 April 2017 14:39 CEST | Original file | - |
| article xml uploaded. | 27 April 2017 14:37 CEST | Original file | https://www.mdpi.com/1424-8220/17/5/971/xml |
| article pdf uploaded. | 27 April 2017 14:37 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/5/971/pdf |
