| article html file updated | 7 February 2020 21:35 CET | Update | https://www.mdpi.com/2073-4360/9/1/26 |
| article html file updated | 22 September 2019 22:05 CEST | Update | N/A |
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| article xml uploaded. | 17 January 2017 08:54 CET | Update | https://www.mdpi.com/2073-4360/9/1/26/xml |
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| article pdf uploaded. | 17 January 2017 08:54 CET | Version of Record | https://www.mdpi.com/2073-4360/9/1/26/pdf |