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| article html file updated | 16 July 2022 09:18 CEST | Update | N/A |
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| article xml uploaded. | 22 February 2018 09:47 CET | Update | https://www.mdpi.com/2073-4425/9/2/99/xml |
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| article pdf uploaded. | 22 February 2018 09:47 CET | Updated version of record | https://www.mdpi.com/2073-4425/9/2/99/pdf |
| article pdf uploaded. | 15 February 2018 14:28 CET | Version of Record | https://www.mdpi.com/2073-4425/9/2/99/pdf-vor |
