| article html file updated | 8 February 2020 05:01 CET | Update | https://www.mdpi.com/2073-4409/6/2/11 |
| article html file updated | 24 September 2019 15:35 CEST | Update | - |
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| article html file updated | 4 May 2017 11:52 CEST | Original file | - |
| article xml uploaded. | 4 May 2017 11:50 CEST | Original file | https://www.mdpi.com/2073-4409/6/2/11/xml |
| article pdf uploaded. | 4 May 2017 11:50 CEST | Version of Record | https://www.mdpi.com/2073-4409/6/2/11/pdf |
