| article html file updated | 9 February 2020 11:19 CET | Update | https://www.mdpi.com/2224-2708/7/2/16 |
| article html file updated | 1 October 2019 23:45 CEST | Update | - |
| article html file updated | 1 May 2019 08:37 CEST | Update | - |
| article html file updated | 17 April 2019 08:31 CEST | Update | - |
| article html file updated | 29 March 2019 09:56 CET | Update | - |
| article html file updated | 28 June 2018 08:39 CEST | Update | - |
| article html file updated | 26 March 2018 17:31 CEST | Original file | - |
| article xml uploaded. | 26 March 2018 16:16 CEST | Update | https://www.mdpi.com/2224-2708/7/2/16/xml |
| article pdf uploaded. | 26 March 2018 16:16 CEST | Version of Record | https://www.mdpi.com/2224-2708/7/2/16/pdf |
