| article html file updated | 7 February 2020 07:36 CET | Update | https://www.mdpi.com/1424-8220/16/4/571 |
| article html file updated | 5 May 2019 17:57 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:34 CET | Update | N/A |
| article html file updated | 29 April 2016 05:19 CEST | Update | N/A |
| article html file updated | 21 April 2016 11:33 CEST | Original file | N/A |
| article xml uploaded. | 21 April 2016 11:32 CEST | Original file | https://www.mdpi.com/1424-8220/16/4/571/xml |
| article pdf uploaded. | 21 April 2016 11:32 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/4/571/pdf |
