| article html file updated | 7 February 2020 18:01 CET | Update | https://www.mdpi.com/2076-0787/5/4/84 |
| article html file updated | 4 May 2019 22:30 CEST | Update | N/A |
| article html file updated | 15 November 2016 12:50 CET | Original file | N/A |
| article xml uploaded. | 15 November 2016 12:49 CET | Original file | https://www.mdpi.com/2076-0787/5/4/84/xml |
| article pdf uploaded. | 15 November 2016 12:49 CET | Version of Record | https://www.mdpi.com/2076-0787/5/4/84/pdf |
