| article html file updated | 1 September 2025 00:02 CEST | Update | https://www.mdpi.com/2227-9067/7/6/64 |
| article html file updated | 21 July 2022 21:17 CEST | Update | N/A |
| article html file updated | 6 July 2020 06:25 CEST | Update | N/A |
| article html file updated | 18 June 2020 13:55 CEST | Original file | N/A |
| article pdf uploaded. | 18 June 2020 13:54 CEST | Version of Record | https://www.mdpi.com/2227-9067/7/6/64/pdf |
| article xml uploaded. | 18 June 2020 13:54 CEST | Update | https://www.mdpi.com/2227-9067/7/6/64/xml |
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