| article html file updated | 8 February 2020 10:24 CET | Update | https://www.mdpi.com/1999-5903/9/3/30 |
| article html file updated | 25 September 2019 19:34 CEST | Update | - |
| article html file updated | 3 May 2019 13:31 CEST | Update | - |
| article html file updated | 30 September 2017 13:59 CEST | Update | - |
| article html file updated | 8 July 2017 08:17 CEST | Original file | - |
| article xml uploaded. | 8 July 2017 08:16 CEST | Original file | https://www.mdpi.com/1999-5903/9/3/30/xml |
| article pdf uploaded. | 8 July 2017 08:16 CEST | Version of Record | https://www.mdpi.com/1999-5903/9/3/30/pdf |
