| article html file updated | 8 February 2020 09:39 CET | Update | https://www.mdpi.com/1999-5903/9/3/28 |
| article html file updated | 25 September 2019 15:41 CEST | Update | - |
| article html file updated | 3 May 2019 14:54 CEST | Update | - |
| article html file updated | 30 September 2017 13:59 CEST | Update | - |
| article html file updated | 29 June 2017 15:21 CEST | Original file | - |
| article xml uploaded. | 29 June 2017 15:19 CEST | Update | https://www.mdpi.com/1999-5903/9/3/28/xml |
| article pdf uploaded. | 29 June 2017 15:19 CEST | Version of Record | https://www.mdpi.com/1999-5903/9/3/28/pdf |
