| article html file updated | 8 February 2020 02:27 CET | Update | https://www.mdpi.com/1424-8220/17/4/708 |
| article html file updated | 24 September 2019 01:24 CEST | Update | - |
| article html file updated | 4 May 2019 04:35 CEST | Update | - |
| article html file updated | 29 April 2017 13:37 CEST | Update | - |
| article html file updated | 29 March 2017 17:00 CEST | Original file | - |
| article xml uploaded. | 29 March 2017 16:59 CEST | Original file | https://www.mdpi.com/1424-8220/17/4/708/xml |
| article pdf uploaded. | 29 March 2017 16:59 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/708/pdf |
