| article html file updated | 9 February 2020 02:59 CET | Update | https://www.mdpi.com/2224-2708/7/1/4 |
| article html file updated | 29 September 2019 21:37 CEST | Update | - |
| article html file updated | 2 May 2019 02:22 CEST | Update | - |
| article html file updated | 18 April 2019 00:37 CEST | Update | - |
| article html file updated | 28 March 2019 15:25 CET | Update | - |
| article html file updated | 27 March 2018 12:42 CEST | Update | - |
| article html file updated | 16 January 2018 03:48 CET | Update | - |
| article xml uploaded. | 16 January 2018 03:47 CET | Update | https://www.mdpi.com/2224-2708/7/1/4/xml |
| article xml uploaded. | 16 January 2018 03:47 CET | Update | - |
| article pdf uploaded. | 16 January 2018 03:47 CET | Updated version of record | https://www.mdpi.com/2224-2708/7/1/4/pdf |
| article html file updated | 13 January 2018 11:38 CET | Original file | - |
| article xml uploaded. | 13 January 2018 11:37 CET | Update | - |
| article xml uploaded. | 13 January 2018 11:37 CET | Original file | - |
| article pdf uploaded. | 13 January 2018 11:37 CET | Version of Record | https://www.mdpi.com/2224-2708/7/1/4/pdf-vor |
