| article html file updated | 8 February 2020 22:58 CET | Update | https://www.mdpi.com/2308-3417/2/4/38 |
| article html file updated | 28 September 2019 22:49 CEST | Update | - |
| article html file updated | 2 May 2019 11:01 CEST | Update | - |
| article html file updated | 18 April 2019 08:38 CEST | Update | - |
| article html file updated | 3 December 2017 08:32 CET | Original file | - |
| article xml uploaded. | 3 December 2017 08:31 CET | Original file | https://www.mdpi.com/2308-3417/2/4/38/xml |
| article pdf uploaded. | 3 December 2017 08:31 CET | Version of Record | https://www.mdpi.com/2308-3417/2/4/38/pdf |
