| article html file updated | 7 February 2020 21:08 CET | Update | https://www.mdpi.com/2072-4292/9/1/57 |
| article html file updated | 22 September 2019 19:46 CEST | Update | - |
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| article html file updated | 8 February 2017 10:29 CET | Update | - |
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| article xml uploaded. | 10 January 2017 14:10 CET | Original file | https://www.mdpi.com/2072-4292/9/1/57/xml |
| article pdf uploaded. | 10 January 2017 14:10 CET | Version of Record | https://www.mdpi.com/2072-4292/9/1/57/pdf |
