| article html file updated | 7 February 2020 22:32 CET | Update | https://www.mdpi.com/2410-3896/2/1/6 |
| article html file updated | 4 May 2019 12:59 CEST | Update | - |
| article html file updated | 27 October 2017 09:00 CEST | Update | - |
| article html file updated | 10 February 2017 11:10 CET | Original file | - |
| article xml uploaded. | 10 February 2017 11:09 CET | Original file | https://www.mdpi.com/2410-3896/2/1/6/xml |
| article pdf uploaded. | 10 February 2017 11:09 CET | Updated version of record | https://www.mdpi.com/2410-3896/2/1/6/pdf |
| article pdf uploaded. | 9 February 2017 09:58 CET | Updated version of record | https://www.mdpi.com/2410-3896/2/1/6/pdf-vor |
| article pdf uploaded. | 31 January 2017 11:15 CET | Version of Record | https://www.mdpi.com/2410-3896/2/1/6/pdf-vor |
