| article html file updated | 9 February 2020 06:32 CET | Update | https://www.mdpi.com/1999-4915/10/2/81 |
| article html file updated | 30 September 2019 18:46 CEST | Update | - |
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| article html file updated | 13 February 2018 13:15 CET | Original file | - |
| article xml uploaded. | 13 February 2018 13:13 CET | Original file | https://www.mdpi.com/1999-4915/10/2/81/xml |
| article pdf uploaded. | 13 February 2018 13:13 CET | Version of Record | https://www.mdpi.com/1999-4915/10/2/81/pdf |
