| article html file updated | 30 August 2025 12:51 CEST | Update | https://www.mdpi.com/2077-0375/9/3/39 |
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| article pdf uploaded. | 11 March 2019 08:11 CET | Version of Record | https://www.mdpi.com/2077-0375/9/3/39/pdf |
| article xml uploaded. | 11 March 2019 08:11 CET | Update | https://www.mdpi.com/2077-0375/9/3/39/xml |
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