| article html file updated | 8 February 2020 21:26 CET | Update | https://www.mdpi.com/1999-5903/9/4/85 |
| article html file updated | 28 September 2019 13:06 CEST | Update | - |
| article html file updated | 2 May 2019 14:28 CEST | Update | - |
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| article html file updated | 2 January 2018 11:20 CET | Update | - |
| article html file updated | 17 November 2017 08:21 CET | Original file | - |
| article xml uploaded. | 17 November 2017 08:20 CET | Update | https://www.mdpi.com/1999-5903/9/4/85/xml |
| article xml uploaded. | 17 November 2017 08:20 CET | Update | - |
| article xml uploaded. | 17 November 2017 08:20 CET | Original file | - |
| article pdf uploaded. | 17 November 2017 08:20 CET | Version of Record | https://www.mdpi.com/1999-5903/9/4/85/pdf |
