| article html file updated | 15 August 2026 21:58 CEST | Update | https://www.mdpi.com/2226-4310/6/4/45 |
| article html file updated | 30 August 2025 14:06 CEST | Update | N/A |
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| article html file updated | 24 April 2019 11:43 CEST | Original file | N/A |
| article pdf uploaded. | 24 April 2019 11:41 CEST | Updated version of record | https://www.mdpi.com/2226-4310/6/4/45/pdf |
| article xml uploaded. | 24 April 2019 11:41 CEST | Update | https://www.mdpi.com/2226-4310/6/4/45/xml |
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| article pdf uploaded. | 17 April 2019 14:50 CEST | Version of Record | https://www.mdpi.com/2226-4310/6/4/45/pdf-vor |
| article xml file uploaded | 17 April 2019 14:50 CEST | Original file | N/A |
