| article html file updated | 8 February 2020 09:00 CET | Update | https://www.mdpi.com/1999-5903/9/3/23 |
| article html file updated | 25 September 2019 12:14 CEST | Update | - |
| article html file updated | 3 May 2019 16:05 CEST | Update | - |
| article html file updated | 30 September 2017 13:58 CEST | Update | - |
| article html file updated | 22 June 2017 13:45 CEST | Original file | - |
| article xml uploaded. | 22 June 2017 13:44 CEST | Original file | https://www.mdpi.com/1999-5903/9/3/23/xml |
| article pdf uploaded. | 22 June 2017 13:44 CEST | Version of Record | https://www.mdpi.com/1999-5903/9/3/23/pdf |
