| article html file updated | 9 February 2020 03:54 CET | Update | https://www.mdpi.com/2073-4425/9/1/47 |
| article html file updated | 30 September 2019 03:01 CEST | Update | - |
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| article html file updated | 1 February 2018 07:58 CET | Update | - |
| article html file updated | 22 January 2018 14:27 CET | Original file | - |
| article xml uploaded. | 22 January 2018 14:26 CET | Original file | https://www.mdpi.com/2073-4425/9/1/47/xml |
| article pdf uploaded. | 22 January 2018 14:26 CET | Version of Record | https://www.mdpi.com/2073-4425/9/1/47/pdf |
