| article html file updated | 9 February 2020 01:30 CET | Update | https://www.mdpi.com/1999-4907/9/1/16 |
| article html file updated | 29 September 2019 13:31 CEST | Update | - |
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| article xml uploaded. | 29 December 2017 12:27 CET | Original file | https://www.mdpi.com/1999-4907/9/1/16/xml |
| article pdf uploaded. | 29 December 2017 12:27 CET | Version of Record | https://www.mdpi.com/1999-4907/9/1/16/pdf |
