| article html file updated | 7 February 2020 07:30 CET | Update | https://www.mdpi.com/1999-4923/8/2/14 |
| article html file updated | 5 May 2019 18:09 CEST | Update | - |
| article html file updated | 27 March 2019 02:22 CET | Update | - |
| article html file updated | 5 July 2016 04:49 CEST | Update | - |
| article html file updated | 20 April 2016 09:38 CEST | Original file | - |
| article xml uploaded. | 20 April 2016 09:37 CEST | Original file | https://www.mdpi.com/1999-4923/8/2/14/xml |
| article pdf uploaded. | 20 April 2016 09:37 CEST | Version of Record | https://www.mdpi.com/1999-4923/8/2/14/pdf |
