| article html file updated | 9 February 2020 04:44 CET | Update | https://www.mdpi.com/2075-5309/8/2/19 |
| article html file updated | 30 September 2019 07:47 CEST | Update | - |
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| article html file updated | 29 January 2018 17:52 CET | Original file | - |
| article xml uploaded. | 29 January 2018 17:51 CET | Update | https://www.mdpi.com/2075-5309/8/2/19/xml |
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| article pdf uploaded. | 29 January 2018 17:50 CET | Version of Record | https://www.mdpi.com/2075-5309/8/2/19/pdf |
