| article html file updated | 8 February 2020 06:32 CET | Update | https://www.mdpi.com/2227-7080/5/2/24 |
| article html file updated | 24 September 2019 23:29 CEST | Update | - |
| article html file updated | 3 May 2019 20:43 CEST | Update | - |
| article html file updated | 29 June 2017 11:56 CEST | Update | - |
| article html file updated | 24 May 2017 05:45 CEST | Original file | - |
| article xml uploaded. | 24 May 2017 05:44 CEST | Update | https://www.mdpi.com/2227-7080/5/2/24/xml |
| article pdf uploaded. | 24 May 2017 05:44 CEST | Version of Record | https://www.mdpi.com/2227-7080/5/2/24/pdf |
