| article html file updated | 31 August 2025 07:51 CEST | Update | https://www.mdpi.com/2199-8531/6/1/4 |
| article html file updated | 19 July 2022 20:28 CEST | Update | N/A |
| article html file updated | 14 February 2020 22:53 CET | Update | N/A |
| article html file updated | 1 February 2020 12:15 CET | Original file | N/A |
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| article pdf uploaded. | 31 December 2019 08:35 CET | Version of Record | https://www.mdpi.com/2199-8531/6/1/4/pdf-vor |
| article xml file uploaded | 31 December 2019 08:35 CET | Original file | N/A |
