| article html file updated | 9 February 2020 06:07 CET | Update | https://www.mdpi.com/1999-5903/10/2/18 |
| article html file updated | 30 September 2019 16:17 CEST | Update | - |
| article html file updated | 1 May 2019 19:36 CEST | Update | - |
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| article html file updated | 14 March 2018 09:29 CET | Update | - |
| article html file updated | 9 February 2018 17:24 CET | Original file | - |
| article xml uploaded. | 9 February 2018 17:23 CET | Original file | https://www.mdpi.com/1999-5903/10/2/18/xml |
| article pdf uploaded. | 9 February 2018 17:23 CET | Version of Record | https://www.mdpi.com/1999-5903/10/2/18/pdf |
