| article html file updated | 31 August 2025 15:38 CEST | Update | https://www.mdpi.com/2226-4787/8/2/51 |
| article html file updated | 21 July 2022 00:07 CEST | Update | - |
| article html file updated | 2 April 2020 11:37 CEST | Original file | - |
| article pdf uploaded. | 1 April 2020 11:40 CEST | Updated version of record | https://www.mdpi.com/2226-4787/8/2/51/pdf |
| article xml uploaded. | 1 April 2020 11:40 CEST | Update | https://www.mdpi.com/2226-4787/8/2/51/xml |
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| article pdf uploaded. | 27 March 2020 09:38 CET | Version of Record | https://www.mdpi.com/2226-4787/8/2/51/pdf-vor |
| article xml file uploaded | 27 March 2020 09:38 CET | Original file | - |
