| article html file updated | 8 February 2020 06:26 CET | Update | https://www.mdpi.com/2224-2708/6/2/5 |
| article html file updated | 24 September 2019 22:57 CEST | Update | N/A |
| article html file updated | 3 May 2019 20:55 CEST | Update | N/A |
| article html file updated | 29 June 2017 11:33 CEST | Update | N/A |
| article html file updated | 22 May 2017 13:42 CEST | Original file | N/A |
| article xml uploaded. | 22 May 2017 13:41 CEST | Original file | https://www.mdpi.com/2224-2708/6/2/5/xml |
| article pdf uploaded. | 22 May 2017 13:41 CEST | Version of Record | https://www.mdpi.com/2224-2708/6/2/5/pdf |
