| article html file updated | 1 September 2025 11:45 CEST | Update | https://www.mdpi.com/2226-471X/5/4/42 |
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| article html file updated | 30 October 2020 09:28 CET | Update | - |
| article pdf uploaded. | 30 October 2020 09:27 CET | Updated version of record | https://www.mdpi.com/2226-471X/5/4/42/pdf |
| article xml uploaded. | 30 October 2020 09:27 CET | Update | https://www.mdpi.com/2226-471X/5/4/42/xml |
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| article html file updated | 23 October 2020 15:19 CEST | Original file | - |
| article pdf uploaded. | 23 October 2020 15:17 CEST | Version of Record | https://www.mdpi.com/2226-471X/5/4/42/pdf-vor |
| article xml uploaded. | 23 October 2020 15:17 CEST | Update | - |
| article xml file uploaded | 23 October 2020 15:17 CEST | Original file | - |