| article html file updated | 7 February 2020 17:39 CET | Update | https://www.mdpi.com/2076-0787/5/4/83 |
| article html file updated | 4 May 2019 23:12 CEST | Update | N/A |
| article html file updated | 8 November 2016 10:42 CET | Original file | N/A |
| article xml uploaded. | 8 November 2016 10:41 CET | Original file | https://www.mdpi.com/2076-0787/5/4/83/xml |
| article pdf uploaded. | 8 November 2016 10:41 CET | Version of Record | https://www.mdpi.com/2076-0787/5/4/83/pdf |
