| article html file updated | 14 August 2026 21:56 CEST | Update | https://www.mdpi.com/1911-8074/11/1/9 |
| article html file updated | 9 February 2020 05:42 CET | Update | N/A |
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| article pdf uploaded. | 7 February 2018 13:05 CET | Updated version of record | https://www.mdpi.com/1911-8074/11/1/9/pdf |
| article pdf uploaded. | 6 February 2018 15:53 CET | Version of Record | https://www.mdpi.com/1911-8074/11/1/9/pdf-vor |
