| article html file updated | 8 February 2020 07:00 CET | Update | https://www.mdpi.com/2227-7099/5/2/17 |
| article html file updated | 25 September 2019 01:50 CEST | Update | - |
| article html file updated | 3 May 2019 19:52 CEST | Update | - |
| article html file updated | 29 June 2017 11:23 CEST | Update | - |
| article html file updated | 30 May 2017 11:22 CEST | Original file | - |
| article xml uploaded. | 30 May 2017 11:21 CEST | Original file | https://www.mdpi.com/2227-7099/5/2/17/xml |
| article pdf uploaded. | 30 May 2017 11:21 CEST | Version of Record | https://www.mdpi.com/2227-7099/5/2/17/pdf |
