| article html file updated | 24 December 2025 14:46 CET | Update | https://www.mdpi.com/2221-3759/7/2/8 |
| article html file updated | 30 August 2025 14:16 CEST | Update | - |
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| article html file updated | 28 April 2019 11:42 CEST | Original file | - |
| article pdf uploaded. | 28 April 2019 11:40 CEST | Updated version of record | https://www.mdpi.com/2221-3759/7/2/8/pdf |
| article xml uploaded. | 28 April 2019 11:40 CEST | Update | https://www.mdpi.com/2221-3759/7/2/8/xml |
| article xml file uploaded | 28 April 2019 11:40 CEST | Update | - |
| article pdf uploaded. | 23 April 2019 09:38 CEST | Version of Record | https://www.mdpi.com/2221-3759/7/2/8/pdf-vor |
| article xml file uploaded | 23 April 2019 09:38 CEST | Original file | - |
