| article html file updated | 8 February 2020 00:26 CET | Update | https://www.mdpi.com/2308-3425/4/1/3 |
| article html file updated | 23 September 2019 13:53 CEST | Update | - |
| article html file updated | 4 May 2019 09:02 CEST | Update | - |
| article html file updated | 1 March 2017 03:59 CET | Original file | - |
| article xml uploaded. | 1 March 2017 03:57 CET | Update | https://www.mdpi.com/2308-3425/4/1/3/xml |
| article xml uploaded. | 28 February 2017 13:02 CET | Original file | - |
| article pdf uploaded. | 28 February 2017 13:02 CET | Version of Record | https://www.mdpi.com/2308-3425/4/1/3/pdf |
