| article html file updated | 29 August 2025 21:13 CEST | Update | https://www.mdpi.com/1999-4907/5/9/2050 |
| article html file updated | 15 July 2022 23:21 CEST | Update | - |
| article html file updated | 6 February 2020 11:55 CET | Update | - |
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| article html file updated | 20 August 2015 17:05 CEST | Update | - |
| article html file updated | 23 September 2014 12:02 CEST | Original file | - |
| article xml file uploaded | 23 September 2014 12:02 CEST | Original file | https://www.mdpi.com/1999-4907/5/9/2050/xml |
| article pdf uploaded. | 10 September 2014 16:11 CEST | Updated version of record | https://www.mdpi.com/1999-4907/5/9/2050/pdf |
| article pdf uploaded. | 5 September 2014 16:29 CEST | Updated version of record | https://www.mdpi.com/1999-4907/5/9/2050/pdf-vor |
| article pdf uploaded. | 4 September 2014 12:21 CEST | Updated version of record | https://www.mdpi.com/1999-4907/5/9/2050/pdf-vor |
| article pdf uploaded. | 1 September 2014 13:48 CEST | Version of Record | https://www.mdpi.com/1999-4907/5/9/2050/pdf-vor |
