| article html file updated | 8 February 2020 19:18 CET | Update | https://www.mdpi.com/2227-9067/4/10/91 |
| article html file updated | 27 September 2019 23:25 CEST | Update | - |
| article html file updated | 2 May 2019 19:19 CEST | Update | - |
| article html file updated | 6 November 2017 07:36 CET | Update | - |
| article html file updated | 24 October 2017 14:27 CEST | Original file | - |
| article xml uploaded. | 24 October 2017 14:26 CEST | Original file | https://www.mdpi.com/2227-9067/4/10/91/xml |
| article pdf uploaded. | 24 October 2017 14:26 CEST | Version of Record | https://www.mdpi.com/2227-9067/4/10/91/pdf |
