| article html file updated | 8 February 2020 19:02 CET | Update | https://www.mdpi.com/2311-7524/3/4/50 |
| article html file updated | 27 September 2019 21:55 CEST | Update | - |
| article html file updated | 2 May 2019 19:56 CEST | Update | - |
| article html file updated | 25 October 2017 09:26 CEST | Original file | - |
| article xml uploaded. | 25 October 2017 09:24 CEST | Update | https://www.mdpi.com/2311-7524/3/4/50/xml |
| article xml uploaded. | 25 October 2017 09:24 CEST | Update | - |
| article xml uploaded. | 25 October 2017 09:24 CEST | Original file | - |
| article pdf uploaded. | 25 October 2017 09:24 CEST | Updated version of record | https://www.mdpi.com/2311-7524/3/4/50/pdf |
| article pdf uploaded. | 20 October 2017 14:24 CEST | Version of Record | https://www.mdpi.com/2311-7524/3/4/50/pdf-vor |
