| article html file updated | 8 February 2020 19:02 CET | Update | https://www.mdpi.com/2076-0760/6/4/127 |
| article html file updated | 27 September 2019 21:52 CEST | Update | - |
| article html file updated | 2 May 2019 19:56 CEST | Update | - |
| article html file updated | 22 October 2017 03:24 CEST | Original file | - |
| article xml uploaded. | 22 October 2017 03:23 CEST | Original file | https://www.mdpi.com/2076-0760/6/4/127/xml |
| article pdf uploaded. | 22 October 2017 03:23 CEST | Updated version of record | https://www.mdpi.com/2076-0760/6/4/127/pdf |
| article pdf uploaded. | 20 October 2017 16:24 CEST | Version of Record | https://www.mdpi.com/2076-0760/6/4/127/pdf-vor |
