| article html file updated | 30 August 2025 02:07 CEST | Update | https://www.mdpi.com/2218-2004/6/1/2 |
| article html file updated | 16 July 2022 08:15 CEST | Update | - |
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| article xml uploaded. | 10 January 2018 10:54 CET | Update | https://www.mdpi.com/2218-2004/6/1/2/xml |
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| article pdf uploaded. | 10 January 2018 10:54 CET | Updated version of record | https://www.mdpi.com/2218-2004/6/1/2/pdf |
| article html file updated | 4 January 2018 11:09 CET | Original file | - |
| article pdf uploaded. | 4 January 2018 11:08 CET | Updated version of record | https://www.mdpi.com/2218-2004/6/1/2/pdf-vor |
| article pdf uploaded. | 30 December 2017 11:54 CET | Version of Record | https://www.mdpi.com/2218-2004/6/1/2/pdf-vor |
