| article html file updated | 8 February 2020 04:44 CET | Update | https://www.mdpi.com/1424-8220/17/5/991 |
| article html file updated | 24 September 2019 14:08 CEST | Update | - |
| article html file updated | 4 May 2019 00:05 CEST | Update | - |
| article html file updated | 2 June 2017 04:05 CEST | Update | - |
| article html file updated | 29 April 2017 11:25 CEST | Original file | - |
| article xml uploaded. | 29 April 2017 11:23 CEST | Update | https://www.mdpi.com/1424-8220/17/5/991/xml |
| article pdf uploaded. | 29 April 2017 11:23 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/5/991/pdf |
