| article html file updated | 9 February 2020 01:23 CET | Update | https://www.mdpi.com/2071-1050/10/1/54 |
| article html file updated | 29 September 2019 12:45 CEST | Update | - |
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| article html file updated | 28 December 2017 08:18 CET | Original file | - |
| article xml uploaded. | 28 December 2017 08:16 CET | Original file | https://www.mdpi.com/2071-1050/10/1/54/xml |
| article pdf uploaded. | 28 December 2017 08:16 CET | Version of Record | https://www.mdpi.com/2071-1050/10/1/54/pdf |
