| article html file updated | 30 August 2025 07:54 CEST | Update | https://www.mdpi.com/2079-9268/8/4/39 |
| article html file updated | 17 July 2022 05:12 CEST | Update | N/A |
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| article html file updated | 17 October 2018 13:30 CEST | Original file | N/A |
| article pdf uploaded. | 17 October 2018 13:30 CEST | Version of Record | https://www.mdpi.com/2079-9268/8/4/39/pdf |
| article xml uploaded. | 17 October 2018 13:30 CEST | Update | https://www.mdpi.com/2079-9268/8/4/39/xml |
| article xml file uploaded | 17 October 2018 13:30 CEST | Original file | N/A |
