| article html file updated | 7 February 2020 18:49 CET | Update | https://www.mdpi.com/2076-0760/5/4/77 |
| article html file updated | 4 May 2019 20:55 CEST | Update | N/A |
| article html file updated | 30 November 2016 07:17 CET | Original file | N/A |
| article xml uploaded. | 30 November 2016 07:15 CET | Original file | https://www.mdpi.com/2076-0760/5/4/77/xml |
| article pdf uploaded. | 30 November 2016 07:15 CET | Version of Record | https://www.mdpi.com/2076-0760/5/4/77/pdf |
