| article html file updated | 25 December 2025 00:23 CET | Update | https://www.mdpi.com/2311-5637/6/4/121 |
| article html file updated | 1 September 2025 15:43 CEST | Update | - |
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| article html file updated | 10 December 2020 16:22 CET | Original file | - |
| article pdf uploaded. | 10 December 2020 16:21 CET | Version of Record | https://www.mdpi.com/2311-5637/6/4/121/pdf |
| article xml uploaded. | 10 December 2020 16:21 CET | Update | https://www.mdpi.com/2311-5637/6/4/121/xml |
| article xml file uploaded | 10 December 2020 16:21 CET | Original file | - |
