| article html file updated | 7 February 2020 06:52 CET | Update | https://www.mdpi.com/1424-8220/16/4/481 |
| article html file updated | 5 May 2019 19:31 CEST | Update | - |
| article html file updated | 27 March 2019 01:06 CET | Update | - |
| article html file updated | 29 April 2016 04:34 CEST | Update | - |
| article html file updated | 6 April 2016 10:27 CEST | Original file | - |
| article xml uploaded. | 6 April 2016 10:26 CEST | Original file | https://www.mdpi.com/1424-8220/16/4/481/xml |
| article pdf uploaded. | 6 April 2016 10:26 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/4/481/pdf |
