| article html file updated | 8 February 2020 13:20 CET | Update | https://www.mdpi.com/2227-9067/4/8/73 |
| article html file updated | 26 September 2019 11:58 CEST | Update | - |
| article html file updated | 3 May 2019 07:21 CEST | Update | - |
| article html file updated | 27 March 2019 20:24 CET | Update | - |
| article html file updated | 1 September 2017 08:26 CEST | Update | - |
| article html file updated | 11 August 2017 14:57 CEST | Original file | - |
| article xml uploaded. | 11 August 2017 14:55 CEST | Update | https://www.mdpi.com/2227-9067/4/8/73/xml |
| article xml uploaded. | 11 August 2017 14:55 CEST | Original file | - |
| article pdf uploaded. | 11 August 2017 14:55 CEST | Updated version of record | https://www.mdpi.com/2227-9067/4/8/73/pdf |
| article pdf uploaded. | 11 August 2017 13:19 CEST | Version of Record | - |
