| article html file updated | 9 February 2020 06:50 CET | Update | https://www.mdpi.com/2224-2708/7/1/8 |
| article html file updated | 30 September 2019 20:33 CEST | Update | - |
| article html file updated | 1 May 2019 18:00 CEST | Update | - |
| article html file updated | 17 April 2019 17:20 CEST | Update | - |
| article html file updated | 28 March 2019 23:46 CET | Update | - |
| article html file updated | 27 March 2018 12:43 CEST | Update | - |
| article html file updated | 22 February 2018 12:54 CET | Original file | - |
| article xml uploaded. | 22 February 2018 12:52 CET | Original file | https://www.mdpi.com/2224-2708/7/1/8/xml |
| article pdf uploaded. | 22 February 2018 12:52 CET | Updated version of record | https://www.mdpi.com/2224-2708/7/1/8/pdf |
| article pdf uploaded. | 16 February 2018 05:19 CET | Version of Record | https://www.mdpi.com/2224-2708/7/1/8/pdf-vor |
