| article html file updated | 7 February 2020 23:59 CET | Update | https://www.mdpi.com/1999-4923/9/1/10 |
| article html file updated | 23 September 2019 11:18 CEST | Update | - |
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| article html file updated | 31 March 2017 05:35 CEST | Update | - |
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| article xml uploaded. | 22 February 2017 11:34 CET | Original file | https://www.mdpi.com/1999-4923/9/1/10/xml |
| article pdf uploaded. | 22 February 2017 11:34 CET | Version of Record | https://www.mdpi.com/1999-4923/9/1/10/pdf |
