| article html file updated | 8 February 2020 22:44 CET | Update | https://www.mdpi.com/2075-4701/7/12/534 |
| article html file updated | 28 September 2019 21:16 CEST | Update | - |
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| article xml uploaded. | 1 December 2017 09:19 CET | Update | https://www.mdpi.com/2075-4701/7/12/534/xml |
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| article pdf uploaded. | 1 December 2017 09:19 CET | Version of Record | https://www.mdpi.com/2075-4701/7/12/534/pdf |