| article html file updated | 11 February 2020 06:13 CET | Update | https://www.mdpi.com/1424-8247/12/1/6 |
| article html file updated | 27 April 2019 12:29 CEST | Update | - |
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| article html file updated | 26 February 2019 11:38 CET | Update | - |
| article html file updated | 2 January 2019 06:27 CET | Original file | - |
| article pdf uploaded. | 2 January 2019 06:26 CET | Version of Record | https://www.mdpi.com/1424-8247/12/1/6/pdf |
| article xml uploaded. | 2 January 2019 06:26 CET | Update | https://www.mdpi.com/1424-8247/12/1/6/xml |
| article xml file uploaded | 2 January 2019 06:26 CET | Original file | - |
