| article html file updated | 9 February 2020 17:28 CET | Update | https://www.mdpi.com/2077-0375/8/2/24 |
| article html file updated | 3 October 2019 13:24 CEST | Update | - |
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| article xml uploaded. | 14 May 2018 10:09 CEST | Update | https://www.mdpi.com/2077-0375/8/2/24/xml |
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| article pdf uploaded. | 14 May 2018 10:06 CEST | Version of Record | https://www.mdpi.com/2077-0375/8/2/24/pdf |
