| article html file updated | 14 August 2026 15:10 CEST | Update | https://www.mdpi.com/2224-2708/6/2/7 |
| article html file updated | 8 February 2020 08:21 CET | Update | N/A |
| article html file updated | 25 September 2019 08:46 CEST | Update | N/A |
| article html file updated | 3 May 2019 17:21 CEST | Update | N/A |
| article html file updated | 29 June 2017 11:33 CEST | Update | N/A |
| article html file updated | 15 June 2017 10:58 CEST | Original file | N/A |
| article xml uploaded. | 15 June 2017 10:56 CEST | Original file | https://www.mdpi.com/2224-2708/6/2/7/xml |
| article pdf uploaded. | 15 June 2017 10:56 CEST | Version of Record | https://www.mdpi.com/2224-2708/6/2/7/pdf |