| article html file updated | 9 February 2020 12:14 CET | Update | https://www.mdpi.com/2224-2708/7/2/17 |
| article html file updated | 2 October 2019 05:15 CEST | Update | - |
| article html file updated | 1 May 2019 06:40 CEST | Update | - |
| article html file updated | 17 April 2019 06:43 CEST | Update | - |
| article html file updated | 29 March 2019 12:04 CET | Update | - |
| article html file updated | 28 June 2018 08:40 CEST | Update | - |
| article html file updated | 3 April 2018 13:28 CEST | Update | - |
| article html file updated | 2 April 2018 23:48 CEST | Original file | - |
| article xml uploaded. | 2 April 2018 16:05 CEST | Original file | https://www.mdpi.com/2224-2708/7/2/17/xml |
| article pdf uploaded. | 2 April 2018 16:05 CEST | Version of Record | https://www.mdpi.com/2224-2708/7/2/17/pdf |
