| article html file updated | 9 February 2020 01:14 CET | Update | https://www.mdpi.com/2071-1050/10/1/50 |
| article html file updated | 29 September 2019 11:52 CEST | Update | N/A |
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| article html file updated | 26 December 2017 09:14 CET | Original file | N/A |
| article xml uploaded. | 26 December 2017 09:13 CET | Original file | https://www.mdpi.com/2071-1050/10/1/50/xml |
| article pdf uploaded. | 26 December 2017 09:13 CET | Version of Record | https://www.mdpi.com/2071-1050/10/1/50/pdf |
