| article html file updated | 9 February 2020 03:40 CET | Update | https://www.mdpi.com/2075-4701/8/1/73 |
| article html file updated | 30 September 2019 01:42 CEST | Update | - |
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| article html file updated | 9 February 2018 11:08 CET | Update | - |
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| article html file updated | 19 January 2018 17:18 CET | Original file | - |
| article xml uploaded. | 19 January 2018 17:17 CET | Update | https://www.mdpi.com/2075-4701/8/1/73/xml |
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| article pdf uploaded. | 19 January 2018 17:17 CET | Version of Record | https://www.mdpi.com/2075-4701/8/1/73/pdf |
