| article html file updated | 8 February 2020 08:32 CET | Update | https://www.mdpi.com/2225-1154/5/2/42 |
| article html file updated | 25 September 2019 09:41 CEST | Update | - |
| article html file updated | 3 May 2019 17:00 CEST | Update | - |
| article html file updated | 28 June 2017 12:56 CEST | Update | - |
| article html file updated | 16 June 2017 14:26 CEST | Original file | - |
| article xml uploaded. | 16 June 2017 14:25 CEST | Update | https://www.mdpi.com/2225-1154/5/2/42/xml |
| article pdf uploaded. | 16 June 2017 14:25 CEST | Version of Record | https://www.mdpi.com/2225-1154/5/2/42/pdf |
