| article html file updated | 9 February 2020 02:29 CET | Update | https://www.mdpi.com/2075-4701/8/1/42 |
| article html file updated | 29 September 2019 18:55 CEST | Update | - |
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| article html file updated | 9 February 2018 11:01 CET | Update | - |
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| article html file updated | 9 January 2018 17:35 CET | Original file | - |
| article xml uploaded. | 9 January 2018 17:33 CET | Update | https://www.mdpi.com/2075-4701/8/1/42/xml |
| article pdf uploaded. | 9 January 2018 17:32 CET | Version of Record | https://www.mdpi.com/2075-4701/8/1/42/pdf |
