| article html file updated | 7 February 2020 06:44 CET | Update | https://www.mdpi.com/1424-8220/16/4/469 |
| article html file updated | 5 May 2019 19:46 CEST | Update | N/A |
| article html file updated | 27 March 2019 00:52 CET | Update | N/A |
| article html file updated | 29 April 2016 04:30 CEST | Update | N/A |
| article html file updated | 1 April 2016 10:46 CEST | Original file | N/A |
| article xml uploaded. | 1 April 2016 10:44 CEST | Original file | https://www.mdpi.com/1424-8220/16/4/469/xml |
| article pdf uploaded. | 1 April 2016 10:44 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/4/469/pdf |
