| article html file updated | 7 February 2020 07:26 CET | Update | https://www.mdpi.com/1424-8220/16/4/554 |
| article html file updated | 5 May 2019 18:18 CEST | Update | - |
| article html file updated | 27 March 2019 02:12 CET | Update | - |
| article html file updated | 29 April 2016 05:10 CEST | Update | - |
| article html file updated | 18 April 2016 13:15 CEST | Original file | - |
| article xml uploaded. | 18 April 2016 13:14 CEST | Original file | https://www.mdpi.com/1424-8220/16/4/554/xml |
| article pdf uploaded. | 18 April 2016 13:14 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/4/554/pdf |
