| article html file updated | 8 February 2020 10:52 CET | Update | https://www.mdpi.com/1999-5903/9/3/33 |
| article html file updated | 25 September 2019 21:58 CEST | Update | - |
| article html file updated | 3 May 2019 12:39 CEST | Update | - |
| article html file updated | 30 September 2017 14:00 CEST | Update | - |
| article html file updated | 12 July 2017 16:55 CEST | Original file | - |
| article xml uploaded. | 12 July 2017 16:54 CEST | Update | https://www.mdpi.com/1999-5903/9/3/33/xml |
| article pdf uploaded. | 12 July 2017 16:54 CEST | Version of Record | https://www.mdpi.com/1999-5903/9/3/33/pdf |
