| article html file updated | 30 August 2025 10:21 CEST | Update | https://www.mdpi.com/1996-1944/12/1/69 |
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| article html file updated | 26 December 2018 15:02 CET | Original file | - |
| article pdf uploaded. | 26 December 2018 05:34 CET | Updated version of record | https://www.mdpi.com/1996-1944/12/1/69/pdf |
| article xml uploaded. | 26 December 2018 05:34 CET | Update | https://www.mdpi.com/1996-1944/12/1/69/xml |
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| article pdf uploaded. | 25 December 2018 16:41 CET | Updated version of record | https://www.mdpi.com/1996-1944/12/1/69/pdf-vor |
| article pdf uploaded. | 25 December 2018 16:30 CET | Version of Record | https://www.mdpi.com/1996-1944/12/1/69/pdf-vor |
| article xml file uploaded | 25 December 2018 16:30 CET | Original file | - |
