| article html file updated | 7 February 2020 04:07 CET | Update | https://www.mdpi.com/2079-4991/6/2/26 |
| article html file updated | 6 May 2019 01:16 CEST | Update | - |
| article html file updated | 26 March 2019 19:48 CET | Update | - |
| article html file updated | 24 February 2017 10:15 CET | Original file | - |
| article pdf uploaded. | 1 February 2016 09:17 CET | Version of Record | https://www.mdpi.com/2079-4991/6/2/26/pdf |
| article xml uploaded. | 1 February 2016 09:17 CET | Original file | https://www.mdpi.com/2079-4991/6/2/26/xml |
