| article html file updated | 5 February 2020 15:50 CET | Update | https://www.mdpi.com/1999-5903/2/4/587 |
| article html file updated | 9 May 2019 03:41 CEST | Update | - |
| article html file updated | 20 March 2019 03:55 CET | Update | - |
| article html file updated | 20 July 2017 11:19 CEST | Update | - |
| article html file updated | 20 July 2017 11:19 CEST | Update | - |
| article html file updated | 20 July 2017 11:18 CEST | Original file | - |
| article xml uploaded. | 20 July 2017 11:17 CEST | Original file | https://www.mdpi.com/1999-5903/2/4/587/xml |
