| article html file updated | 7 February 2020 16:55 CET | Update | https://www.mdpi.com/2076-0760/5/4/66 |
| article html file updated | 5 May 2019 00:35 CEST | Update | - |
| article html file updated | 25 October 2016 09:44 CEST | Original file | - |
| article xml uploaded. | 25 October 2016 09:42 CEST | Original file | https://www.mdpi.com/2076-0760/5/4/66/xml |
| article pdf uploaded. | 25 October 2016 09:42 CEST | Version of Record | https://www.mdpi.com/2076-0760/5/4/66/pdf |
