| article html file updated | 31 August 2025 05:52 CEST | Update | https://www.mdpi.com/2227-9040/7/4/64 |
| article html file updated | 19 July 2022 22:22 CEST | Update | N/A |
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| article html file updated | 31 December 2019 00:10 CET | Update | N/A |
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| article pdf uploaded. | 6 December 2019 04:24 CET | Version of Record | https://www.mdpi.com/2227-9040/7/4/64/pdf |
| article xml uploaded. | 6 December 2019 04:24 CET | Update | https://www.mdpi.com/2227-9040/7/4/64/xml |
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