| article html file updated | 9 February 2020 01:15 CET | Update | https://www.mdpi.com/2071-1050/10/1/51 |
| article html file updated | 2 May 2019 06:01 CEST | Update | - |
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| article html file updated | 26 December 2017 11:39 CET | Original file | - |
| article xml uploaded. | 26 December 2017 11:38 CET | Original file | https://www.mdpi.com/2071-1050/10/1/51/xml |
| article pdf uploaded. | 26 December 2017 11:38 CET | Version of Record | https://www.mdpi.com/2071-1050/10/1/51/pdf |
