| article html file updated | 9 February 2020 05:04 CET | Update | https://www.mdpi.com/2072-666X/9/2/60 |
| article html file updated | 30 September 2019 09:50 CEST | Update | - |
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| article html file updated | 31 January 2018 17:52 CET | Original file | - |
| article xml uploaded. | 31 January 2018 17:50 CET | Update | https://www.mdpi.com/2072-666X/9/2/60/xml |
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| article pdf uploaded. | 31 January 2018 17:50 CET | Version of Record | https://www.mdpi.com/2072-666X/9/2/60/pdf |