| article html file updated | 9 February 2020 09:29 CET | Update | https://www.mdpi.com/1999-4907/9/3/135 |
| article html file updated | 1 October 2019 12:55 CEST | Update | - |
| article html file updated | 1 May 2019 12:31 CEST | Update | - |
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| article html file updated | 26 March 2018 13:38 CEST | Update | - |
| article html file updated | 12 March 2018 17:11 CET | Original file | - |
| article xml uploaded. | 12 March 2018 17:10 CET | Original file | https://www.mdpi.com/1999-4907/9/3/135/xml |
| article pdf uploaded. | 12 March 2018 17:10 CET | Version of Record | https://www.mdpi.com/1999-4907/9/3/135/pdf |
