| article html file updated | 9 February 2020 03:30 CET | Update | https://www.mdpi.com/2075-4701/8/1/64 |
| article html file updated | 30 September 2019 00:46 CEST | Update | - |
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| article html file updated | 9 February 2018 11:06 CET | Update | - |
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| article html file updated | 18 January 2018 16:48 CET | Original file | - |
| article xml uploaded. | 18 January 2018 16:46 CET | Update | https://www.mdpi.com/2075-4701/8/1/64/xml |
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| article pdf uploaded. | 18 January 2018 16:46 CET | Version of Record | https://www.mdpi.com/2075-4701/8/1/64/pdf |
